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Diffstat (limited to 'libtecla-1.4.1/pcache.c')
| -rw-r--r-- | libtecla-1.4.1/pcache.c | 1688 |
1 files changed, 0 insertions, 1688 deletions
diff --git a/libtecla-1.4.1/pcache.c b/libtecla-1.4.1/pcache.c deleted file mode 100644 index bbea916..0000000 --- a/libtecla-1.4.1/pcache.c +++ /dev/null @@ -1,1688 +0,0 @@ -/* - * Copyright (c) 2000, 2001 by Martin C. Shepherd. - * - * All rights reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, and/or sell copies of the Software, and to permit persons - * to whom the Software is furnished to do so, provided that the above - * copyright notice(s) and this permission notice appear in all copies of - * the Software and that both the above copyright notice(s) and this - * permission notice appear in supporting documentation. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT - * OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR - * HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL - * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING - * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, - * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION - * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - * - * Except as contained in this notice, the name of a copyright holder - * shall not be used in advertising or otherwise to promote the sale, use - * or other dealings in this Software without prior written authorization - * of the copyright holder. - */ - -#include <stdlib.h> -#include <string.h> -#include <stdio.h> - -#include "libtecla.h" -#include "pathutil.h" -#include "homedir.h" -#include "freelist.h" -#include "direader.h" -#include "stringrp.h" - -/* - * The new_PcaPathConf() constructor sets the integer first member of - * the returned object to the following magic number. This is then - * checked for by pca_path_completions() as a sanity check. - */ -#define PPC_ID_CODE 4567 - -/* - * A pointer to a structure of the following type can be passed to - * the builtin path-completion callback function to modify its behavior. - */ -struct PcaPathConf { - int id; /* This is set to PPC_ID_CODE by new_PcaPathConf() */ - PathCache *pc; /* The path-list cache in which to look up the executables */ - int escaped; /* If non-zero, backslashes in the input line are */ - /* interpreted as escaping special characters and */ - /* spaces, and any special characters and spaces in */ - /* the listed completions will also be escaped with */ - /* added backslashes. This is the default behaviour. */ - /* If zero, backslashes are interpreted as being */ - /* literal parts of the file name, and none are added */ - /* to the completion suffixes. */ - int file_start; /* The index in the input line of the first character */ - /* of the file name. If you specify -1 here, */ - /* pca_path_completions() identifies the */ - /* the start of the file by looking backwards for */ - /* an unescaped space, or the beginning of the line. */ -}; - -/* - * Prepended to each chached filename is a character which contains - * one of the following status codes. When a given filename (minus - * this byte) is passed to the application's check_fn(), the result - * is recorded in this byte, such that the next time it is looked - * up, we don't have to call check_fn() again. These codes are cleared - * whenever the path is scanned and whenever the check_fn() callback - * is changed. - */ -typedef enum { - PCA_F_ENIGMA='?', /* The file remains to be checked */ - PCA_F_WANTED='+', /* The file has been selected by the caller's callback */ - PCA_F_IGNORE='-' /* The file has been rejected by the caller's callback */ -} PcaFileStatus; - -/* - * Encapsulate the memory management objects which supply memoy for - * the arrays of filenames. - */ -typedef struct { - StringGroup *sg; /* The memory used to record the names of files */ - size_t files_dim; /* The allocated size of files[] */ - char **files; /* Memory for 'files_dim' pointers to files */ - size_t nfiles; /* The number of filenames currently in files[] */ -} CacheMem; - -static CacheMem *new_CacheMem(void); -static CacheMem *del_CacheMem(CacheMem *cm); -static void rst_CacheMem(CacheMem *cm); - -/* - * Lists of nodes of the following type are used to record the - * names and contents of individual directories. - */ -typedef struct PathNode PathNode; -struct PathNode { - PathNode *next; /* The next directory in the path */ - int relative; /* True if the directory is a relative pathname */ - CacheMem *mem; /* The memory used to store dir[] and files[] */ - char *dir; /* The directory pathname (stored in pc->sg) */ - int nfile; /* The number of filenames stored in 'files' */ - char **files; /* Files of interest in the current directory, */ - /* or NULL if dir[] is a relative pathname */ - /* who's contents can't be cached. This array */ - /* and its contents are taken from pc->abs_mem */ - /* or pc->rel_mem */ -}; - -/* - * Append a new node to the list of directories in the path. - */ -static int add_PathNode(PathCache *pc, const char *dirname); - -/* - * Set the max length of the error-reporting string. There is no point - * in this being longer than the width of a typical terminal window. - * In composing error messages, I have assumed that this number is - * at least 80, so you don't decrease it below this number. - */ -#define ERRLEN 200 - -/* - * Set the maximum length allowed for usernames. - * names. - */ -#define USR_LEN 100 - -/* - * PathCache objects encapsulate the resources needed to record - * files of interest from comma-separated lists of directories. - */ -struct PathCache { - FreeList *node_mem; /* A free-list of PathNode objects */ - CacheMem *abs_mem; /* Memory for the filenames of absolute paths */ - CacheMem *rel_mem; /* Memory for the filenames of relative paths */ - PathNode *head; /* The head of the list of directories in the */ - /* path, or NULL if no path has been scanned yet. */ - PathNode *tail; /* The tail of the list of directories in the */ - /* path, or NULL if no path has been scanned yet. */ - PathName *path; /* The fully qualified name of a file */ - HomeDir *home; /* Home-directory lookup object */ - DirReader *dr; /* A portable directory reader */ - CplFileConf *cfc; /* Configuration parameters to pass to */ - /* cpl_file_completions() */ - CplCheckFn *check_fn; /* The callback used to determine if a given */ - /* filename should be recorded in the cache. */ - void *data; /* Annonymous data to be passed to pc->check_fn() */ - char usrnam[USR_LEN+1];/* The buffer used when reading the names of */ - /* users. */ - char errmsg[ERRLEN+1]; /* Error-report buffer */ -}; - -/* - * Empty the cache. - */ -static void pca_clear_cache(PathCache *pc); - -/* - * Read a username from string[] and record it in pc->usrnam[]. - */ -static int pca_read_username(PathCache *pc, const char *string, int slen, - int literal, const char **nextp); - -/* - * Extract the next component of a colon separated list of directory - * paths. - */ -static int pca_extract_dir(PathCache *pc, const char *path, - const char **nextp); - -/* - * Scan absolute directories for files of interest, recording their names - * in mem->sg and recording pointers to these names in mem->files[]. - */ -static int pca_scan_dir(PathCache *pc, const char *dirname, CacheMem *mem); - -/* - * A qsort() comparison function for comparing the cached filename - * strings pointed to by two (char **) array elements. Note that - * this ignores the initial cache-status byte of each filename. - */ -static int pca_cmp_matches(const void *v1, const void *v2); - -/* - * A qsort() comparison function for comparing a filename - * against an element of an array of pointers to filename cache - * entries. - */ -static int pca_cmp_file(const void *v1, const void *v2); - -/* - * Initialize a PcaPathConf configuration objects with the default - * options. - */ -static int pca_init_PcaPathConf(PcaPathConf *ppc, PathCache *pc); - -/* - * Make a copy of a completion suffix, suitable for passing to - * cpl_add_completion(). - */ -static int pca_prepare_suffix(PathCache *pc, const char *suffix, - int add_escapes); - -/* - * Return non-zero if the specified string appears to start with a pathname. - */ -static int cpa_cmd_contains_path(const char *prefix, int prefix_len); - -/* - * Return a given prefix with escapes optionally removed. - */ -static const char *pca_prepare_prefix(PathCache *pc, const char *prefix, - size_t prefix_len, int escaped); - -/* - * If there is a tilde expression at the beginning of the specified path, - * place the corresponding home directory into pc->path. Otherwise - * just clear pc->path. - */ -static int pca_expand_tilde(PathCache *pc, const char *path, int pathlen, - int literal, const char **endp); - -/* - * Clear the filename status codes that are recorded before each filename - * in the cache. - */ -static void pca_remove_marks(PathCache *pc); - -/* - * Specify how many PathNode's to allocate at a time. - */ -#define PATH_NODE_BLK 30 - -/* - * Specify the amount by which the files[] arrays are to be extended - * whenever they are found to be too small. - */ -#define FILES_BLK_FACT 256 - -/*....................................................................... - * Create a new object who's function is to maintain a cache of - * filenames found within a list of directories, and provide quick - * lookup and completion of selected files in this cache. - * - * Output: - * return PathCache * The new, initially empty cache, or NULL - * on error. - */ -PathCache *new_PathCache(void) -{ - PathCache *pc; /* The object to be returned */ -/* - * Allocate the container. - */ - pc = (PathCache *)malloc(sizeof(PathCache)); - if(!pc) { - fprintf(stderr, "new_PathCache: Insufficient memory.\n"); - return NULL; - }; -/* - * Before attempting any operation that might fail, initialize the - * container at least up to the point at which it can safely be passed - * to del_PathCache(). - */ - pc->node_mem = NULL; - pc->abs_mem = NULL; - pc->rel_mem = NULL; - pc->head = NULL; - pc->tail = NULL; - pc->path = NULL; - pc->home = NULL; - pc->dr = NULL; - pc->cfc = NULL; - pc->check_fn = 0; - pc->data = NULL; - pc->usrnam[0] = '\0'; - pc->errmsg[0] = '\0'; -/* - * Allocate the freelist of directory list nodes. - */ - pc->node_mem = _new_FreeList("new_PathCache", sizeof(PathNode), - PATH_NODE_BLK); - if(!pc->node_mem) - return del_PathCache(pc); -/* - * Allocate memory for recording names of files in absolute paths. - */ - pc->abs_mem = new_CacheMem(); - if(!pc->abs_mem) - return del_PathCache(pc); -/* - * Allocate memory for recording names of files in relative paths. - */ - pc->rel_mem = new_CacheMem(); - if(!pc->rel_mem) - return del_PathCache(pc); -/* - * Allocate a pathname buffer. - */ - pc->path = _new_PathName(); - if(!pc->path) - return del_PathCache(pc); -/* - * Allocate an object for looking up home-directories. - */ - pc->home = _new_HomeDir(); - if(!pc->home) - return del_PathCache(pc); -/* - * Allocate an object for reading directories. - */ - pc->dr = _new_DirReader(); - if(!pc->dr) - return del_PathCache(pc); -/* - * Allocate a cpl_file_completions() configuration object. - */ - pc->cfc = new_CplFileConf(); - if(!pc->cfc) - return del_PathCache(pc); -/* - * Configure cpl_file_completions() to use check_fn() to select - * files of interest. - */ - cfc_set_check_fn(pc->cfc, pc->check_fn, pc->data); -/* - * Return the cache, ready for use. - */ - return pc; -} - -/*....................................................................... - * Delete a given cache of files, returning the resources that it - * was using to the system. - * - * Input: - * pc PathCache * The cache to be deleted (can be NULL). - * Output: - * return PathCache * The deleted object (ie. allways NULL). - */ -PathCache *del_PathCache(PathCache *pc) -{ - if(pc) { -/* - * Delete the memory of the list of path nodes. - */ - pc->node_mem = _del_FreeList(NULL, pc->node_mem, 1); -/* - * Delete the memory used to record filenames. - */ - pc->abs_mem = del_CacheMem(pc->abs_mem); - pc->rel_mem = del_CacheMem(pc->rel_mem); -/* - * The list of PathNode's was already deleted when node_mem was - * deleted. - */ - pc->head = NULL; - pc->tail = NULL; -/* - * Delete the pathname buffer. - */ - pc->path = _del_PathName(pc->path); -/* - * Delete the home-directory lookup object. - */ - pc->home = _del_HomeDir(pc->home); -/* - * Delete the directory reader. - */ - pc->dr = _del_DirReader(pc->dr); -/* - * Delete the cpl_file_completions() config object. - */ - pc->cfc = del_CplFileConf(pc->cfc); -/* - * Delete the container. - */ - free(pc); - }; - return NULL; -} - -/*....................................................................... - * If you want subsequent calls to pca_lookup_file() and - * pca_path_completions() to only return the filenames of certain - * types of files, for example executables, or filenames ending in - * ".ps", call this function to register a file-selection callback - * function. This callback function takes the full pathname of a file, - * plus application-specific data, and returns 1 if the file is of - * interest, and zero otherwise. - * - * Input: - * pc PathCache * The filename cache. - * check_fn CplCheckFn * The function to call to see if the name of - * a given file should be included in the - * cache. This determines what type of files - * will reside in the cache. To revert to - * selecting all files, regardless of type, - * pass 0 here. - * data void * You can pass a pointer to anything you - * like here, including NULL. It will be - * passed to your check_fn() callback - * function, for its private use. - */ -void pca_set_check_fn(PathCache *pc, CplCheckFn *check_fn, void *data) -{ - if(pc) { -/* - * If the callback or its data pointer have changed, clear the cached - * statuses of files that were accepted or rejected by the previous - * calback. - */ - if(check_fn != pc->check_fn || data != pc->data) - pca_remove_marks(pc); -/* - * Record the new callback locally. - */ - pc->check_fn = check_fn; - pc->data = data; -/* - * Configure cpl_file_completions() to use the same callback to - * select files of interest. - */ - cfc_set_check_fn(pc->cfc, check_fn, data); - }; - return; -} - -/*....................................................................... - * Return a description of the last path-caching error that occurred. - * - * Input: - * pc PathCache * The filename cache that suffered the error. - * Output: - * return char * The description of the last error. - */ -const char *pca_last_error(PathCache *pc) -{ - return pc ? pc->errmsg : "NULL PathCache argument"; -} - -/*....................................................................... - * Discard all cached filenames. - * - * Input: - * pc PathCache * The cache to be cleared. - */ -static void pca_clear_cache(PathCache *pc) -{ - if(pc) { -/* - * Return all path-nodes to the freelist. - */ - _rst_FreeList(pc->node_mem); - pc->head = pc->tail = NULL; -/* - * Delete all filename strings. - */ - rst_CacheMem(pc->abs_mem); - rst_CacheMem(pc->rel_mem); - }; - return; -} - -/*....................................................................... - * Build the list of files of interest contained in a given - * colon-separated list of directories. - * - * Input: - * pc PathCache * The cache in which to store the names of - * the files that are found in the list of - * directories. - * path const char * A colon-separated list of directory - * paths. Under UNIX, when searching for - * executables, this should be the return - * value of getenv("PATH"). - * Output: - * return int 0 - OK. - * 1 - An error occurred. A description of - * the error can be acquired by calling - * pca_last_error(pc). - */ -int pca_scan_path(PathCache *pc, const char *path) -{ - const char *pptr; /* A pointer to the next unprocessed character in path[] */ - PathNode *node; /* A node in the list of directory paths */ - char **fptr; /* A pointer into pc->abs_mem->files[] */ -/* - * Check the arguments. - */ - if(!pc) - return 1; -/* - * Clear the outdated contents of the cache. - */ - pca_clear_cache(pc); -/* - * If no path list was provided, there is nothing to be added to the - * cache. - */ - if(!path) - return 0; -/* - * Extract directories from the path list, expanding tilde expressions - * on the fly into pc->pathname, then add them to the list of path - * nodes, along with a sorted list of the filenames of interest that - * the directories hold. - */ - pptr = path; - while(*pptr) { -/* - * Extract the next pathname component into pc->path->name. - */ - if(pca_extract_dir(pc, pptr, &pptr)) - return 1; -/* - * Add a new node to the list of paths, containing both the - * directory name and, if not a relative pathname, the list of - * files of interest in the directory. - */ - if(add_PathNode(pc, pc->path->name)) - return 1; - }; -/* - * The file arrays in each absolute directory node are sections of - * pc->abs_mem->files[]. Record pointers to the starts of each - * of these sections in each directory node. Note that this couldn't - * be done in add_PathNode(), because pc->abs_mem->files[] may - * get reallocated in subsequent calls to add_PathNode(), thus - * invalidating any pointers to it. - */ - fptr = pc->abs_mem->files; - for(node=pc->head; node; node=node->next) { - node->files = fptr; - fptr += node->nfile; - }; - return 0; -} - -/*....................................................................... - * Extract the next directory path from a colon-separated list of - * directories, expanding tilde home-directory expressions where needed. - * - * Input: - * pc PathCache * The cache of filenames. - * path const char * A pointer to the start of the next component - * in the path list. - * Input/Output: - * nextp const char ** A pointer to the next unprocessed character - * in path[] will be assigned to *nextp. - * Output: - * return int 0 - OK. The extracted path is in pc->path->name. - * 1 - Error. A description of the error will - * have been left in pc->errmsg. - */ -static int pca_extract_dir(PathCache *pc, const char *path, const char **nextp) -{ - const char *pptr; /* A pointer into path[] */ - const char *sptr; /* The path following tilde expansion */ - int escaped = 0; /* True if the last character was a backslash */ -/* - * If there is a tilde expression at the beginning of the specified path, - * place the corresponding home directory into pc->path. Otherwise - * just clear pc->path. - */ - if(pca_expand_tilde(pc, path, strlen(path), 0, &pptr)) - return 1; -/* - * Keep a record of the current location in the path. - */ - sptr = pptr; -/* - * Locate the end of the directory name in the pathname string, stopping - * when either the end of the string is reached, or an un-escaped colon - * separator is seen. - */ - while(*pptr && (escaped || *pptr != ':')) - escaped = !escaped && *pptr++ == '\\'; -/* - * Append the rest of the directory path to the pathname buffer. - */ - if(_pn_append_to_path(pc->path, sptr, pptr - sptr, 1) == NULL) { - strcpy(pc->errmsg, "Insufficient memory to record directory name"); - return 1; - }; -/* - * To facilitate subsequently appending filenames to the directory - * path name, make sure that the recorded directory name ends in a - * directory separator. - */ - { - int dirlen = strlen(pc->path->name); - if(dirlen < FS_DIR_SEP_LEN || - strncmp(pc->path->name + dirlen - FS_DIR_SEP_LEN, FS_DIR_SEP, - FS_DIR_SEP_LEN) != 0) { - if(_pn_append_to_path(pc->path, FS_DIR_SEP, FS_DIR_SEP_LEN, 0) == NULL) { - strcpy(pc->errmsg, "Insufficient memory to record directory name"); - return 1; - }; - }; - }; -/* - * Skip the separator unless we have reached the end of the path. - */ - if(*pptr==':') - pptr++; -/* - * Return the unprocessed tail of the path-list string. - */ - *nextp = pptr; - return 0; -} - -/*....................................................................... - * Read a username, stopping when a directory separator is seen, a colon - * separator is seen, the end of the string is reached, or the username - * buffer overflows. - * - * Input: - * pc PathCache * The cache of filenames. - * string char * The string who's prefix contains the name. - * slen int The max number of characters to read from string[]. - * literal int If true, treat backslashes as literal characters - * instead of escapes. - * Input/Output: - * nextp char ** A pointer to the next unprocessed character - * in string[] will be assigned to *nextp. - * Output: - * return int 0 - OK. The username can be found in pc->usrnam. - * 1 - Error. A description of the error message - * can be found in pc->errmsg. - */ -static int pca_read_username(PathCache *pc, const char *string, int slen, - int literal, const char **nextp) -{ - int usrlen; /* The number of characters in pc->usrnam[] */ - const char *sptr; /* A pointer into string[] */ - int escaped = 0; /* True if the last character was a backslash */ -/* - * Extract the username. - */ - for(sptr=string,usrlen=0; usrlen < USR_LEN && (sptr-string) < slen; sptr++) { -/* - * Stop if the end of the string is reached, or a directory separator - * or un-escaped colon separator is seen. - */ - if(!*sptr || strncmp(sptr, FS_DIR_SEP, FS_DIR_SEP_LEN)==0 || - (!escaped && *sptr == ':')) - break; -/* - * Escape the next character? - */ - if(!literal && !escaped && *sptr == '\\') { - escaped = 1; - } else { - escaped = 0; - pc->usrnam[usrlen++] = *sptr; - }; - }; -/* - * Did the username overflow the buffer? - */ - if(usrlen >= USR_LEN) { - strcpy(pc->errmsg, "Username too long"); - return 1; - }; -/* - * Terminate the string. - */ - pc->usrnam[usrlen] = '\0'; -/* - * Indicate where processing of the input string should continue. - */ - *nextp = sptr; - return 0; -} - - -/*....................................................................... - * Create a new CacheMem object. - * - * Output: - * return CacheMem * The new object, or NULL on error. - */ -static CacheMem *new_CacheMem(void) -{ - CacheMem *cm; /* The object to be returned */ -/* - * Allocate the container. - */ - cm = (CacheMem *)malloc(sizeof(CacheMem)); - if(!cm) { - fprintf(stderr, "new_CacheMem: Insufficient memory.\n"); - return NULL; - }; -/* - * Before attempting any operation that might fail, initialize the - * container at least up to the point at which it can safely be passed - * to del_CacheMem(). - */ - cm->sg = NULL; - cm->files_dim = 0; - cm->files = NULL; - cm->nfiles = 0; -/* - * Allocate a list of string segments for storing filenames. - */ - cm->sg = _new_StringGroup(_pu_pathname_dim()); - if(!cm->sg) - return del_CacheMem(cm); -/* - * Allocate an array of pointers to filenames. - * This will be extended later if needed. - */ - cm->files_dim = FILES_BLK_FACT; - cm->files = (char **) malloc(sizeof(*cm->files) * cm->files_dim); - if(!cm->files) { - fprintf(stderr, - "new_CacheMem: Insufficient memory to allocate array of files.\n"); - return del_CacheMem(cm); - }; - return cm; -} - -/*....................................................................... - * Delete a CacheMem object. - * - * Input: - * cm CacheMem * The object to be deleted. - * Output: - * return CacheMem * The deleted object (always NULL). - */ -static CacheMem *del_CacheMem(CacheMem *cm) -{ - if(cm) { -/* - * Delete the memory that was used to record filename strings. - */ - cm->sg = _del_StringGroup(cm->sg); -/* - * Delete the array of pointers to filenames. - */ - cm->files_dim = 0; - if(cm->files) { - free(cm->files); - cm->files = NULL; - }; -/* - * Delete the container. - */ - free(cm); - }; - return NULL; -} - -/*....................................................................... - * Re-initialize the memory used to allocate filename strings. - * - * Input: - * cm CacheMem * The memory cache to be cleared. - */ -static void rst_CacheMem(CacheMem *cm) -{ - _clr_StringGroup(cm->sg); - cm->nfiles = 0; - return; -} - -/*....................................................................... - * Append a new directory node to the list of directories read from the - * path. - * - * Input: - * pc PathCache * The filename cache. - * dirname const char * The name of the new directory. - * Output: - * return int 0 - OK. - * 1 - Error. - */ -static int add_PathNode(PathCache *pc, const char *dirname) -{ - PathNode *node; /* The new directory list node */ - int relative; /* True if dirname[] is a relative pathname */ -/* - * Have we been passed a relative pathname or an absolute pathname? - */ - relative = strncmp(dirname, FS_ROOT_DIR, FS_ROOT_DIR_LEN) != 0; -/* - * If it's an absolute pathname, ignore it if the corresponding - * directory doesn't exist. - */ - if(!relative && !_pu_path_is_dir(dirname)) - return 0; -/* - * Allocate a new list node to record the specifics of the new directory. - */ - node = (PathNode *) _new_FreeListNode(pc->node_mem); - if(!node) { - sprintf(pc->errmsg, "Insufficient memory to cache new directory."); - return 1; - }; -/* - * Initialize the node. - */ - node->next = NULL; - node->relative = relative; - node->mem = relative ? pc->rel_mem : pc->abs_mem; - node->dir = NULL; - node->nfile = 0; - node->files = NULL; -/* - * Make a copy of the directory pathname. - */ - node->dir = _sg_store_string(pc->abs_mem->sg, dirname, 0); - if(!node->dir) { - strcpy(pc->errmsg, "Insufficient memory to store directory name."); - return 1; - }; -/* - * Scan absolute directories for files of interest, recording their names - * in node->mem->sg and appending pointers to these names to the - * node->mem->files[] array. - */ - if(!node->relative) { - int nfile = node->nfile = pca_scan_dir(pc, node->dir, node->mem); - if(nfile < 1) { /* No files matched or an error occurred */ - node = (PathNode *) _del_FreeListNode(pc->node_mem, node); - return nfile < 0; - }; - }; -/* - * Append the new node to the list. - */ - if(pc->head) { - pc->tail->next = node; - pc->tail = node; - } else { - pc->head = pc->tail = node; - }; - return 0; -} - -/*....................................................................... - * Scan a given directory for files of interest, record their names - * in mem->sg and append pointers to them to the mem->files[] array. - * - * Input: - * pc PathCache * The filename cache. - * dirname const char * The pathname of the directory to be scanned. - * mem CacheMem * The memory in which to store filenames of - * interest. - * Output: - * return int The number of files recorded, or -1 if a - * memory error occurs. Note that the - * inability to read the contents of the - * directory is not counted as an error. - */ -static int pca_scan_dir(PathCache *pc, const char *dirname, CacheMem *mem) -{ - int nfile = 0; /* The number of filenames recorded */ - const char *filename; /* The name of the file being looked at */ -/* - * Attempt to open the directory. If the directory can't be read then - * there are no accessible files of interest in the directory. - */ - if(_dr_open_dir(pc->dr, dirname, NULL)) - return 0; -/* - * Record the names of all files in the directory in the cache. - */ - while((filename = _dr_next_file(pc->dr))) { - char *copy; /* A copy of the filename */ -/* - * Make a temporary copy of the filename with an extra byte prepended. - */ - _pn_clear_path(pc->path); - if(_pn_append_to_path(pc->path, " ", 1, 0) == NULL || - _pn_append_to_path(pc->path, filename, -1, 1) == NULL) { - strcpy(pc->errmsg, "Insufficient memory to record filename"); - return -1; - }; -/* - * Store the filename. - */ - copy = _sg_store_string(mem->sg, pc->path->name, 0); - if(!copy) { - strcpy(pc->errmsg, "Insufficient memory to cache file name."); - return -1; - }; -/* - * Mark the filename as unchecked. - */ - copy[0] = PCA_F_ENIGMA; -/* - * Make room to store a pointer to the copy in mem->files[]. - */ - if(mem->nfiles + 1 > mem->files_dim) { - int needed = mem->files_dim + FILES_BLK_FACT; - char **files = (char **) realloc(mem->files, sizeof(*mem->files)*needed); - if(!files) { - strcpy(pc->errmsg, "Insufficient memory to extend filename cache."); - return 1; - }; - mem->files = files; - mem->files_dim = needed; - }; -/* - * Record a pointer to the copy of the filename at the end of the files[] - * array. - */ - mem->files[mem->nfiles++] = copy; -/* - * Keep a record of the number of files matched so far. - */ - nfile++; - }; -/* - * Sort the list of files into lexical order. - */ - qsort(mem->files + mem->nfiles - nfile, nfile, sizeof(*mem->files), - pca_cmp_matches); -/* - * Return the number of files recorded in mem->files[]. - */ - return nfile; -} - -/*....................................................................... - * A qsort() comparison function for comparing the cached filename - * strings pointed to by two (char **) array elements. Note that - * this ignores the initial cache-status byte of each filename. - * - * Input: - * v1, v2 void * Pointers to the pointers of two strings to be compared. - * Output: - * return int -1 -> v1 < v2. - * 0 -> v1 == v2 - * 1 -> v1 > v2 - */ -static int pca_cmp_matches(const void *v1, const void *v2) -{ - const char **s1 = (const char **) v1; - const char **s2 = (const char **) v2; - return strcmp(*s1+1, *s2+1); -} - -/*....................................................................... - * Given the simple name of a file, search the cached list of files - * in the order in which they where found in the list of directories - * previously presented to pca_scan_path(), and return the pathname - * of the first file which has this name. If a pathname to a file is - * given instead of a simple filename, this is returned without being - * looked up in the cache, but with any initial ~username expression - * expanded, and optionally, unescaped backslashes removed. - * - * Input: - * pc PathCache * The cached list of files. - * name const char * The name of the file to lookup. - * name_len int The length of the filename string at the - * beginning of name[], or -1 to indicate that - * the filename occupies the whole of the - * string. - * literal int If this argument is zero, lone backslashes - * in name[] are ignored during comparison - * with filenames in the cache, under the - * assumption that they were in the input line - * soley to escape the special significance of - * characters like spaces. To have them treated - * as normal characters, give this argument a - * non-zero value, such as 1. - * Output: - * return char * The pathname of the first matching file, - * or NULL if not found. Note that the returned - * pointer points to memory owned by *pc, and - * will become invalid on the next call to any - * function in the PathCache module. - */ -char *pca_lookup_file(PathCache *pc, const char *name, int name_len, - int literal) -{ - PathNode *node; /* A node in the list of directories in the path */ - char **match; /* A pointer to a matching filename string in the cache */ -/* - * Check the arguments. - */ - if(!pc || !name || name_len==0) - return NULL; -/* - * If no length was specified, determine the length of the string to - * be looked up. - */ - if(name_len < 0) - name_len = strlen(name); -/* - * If the word starts with a ~username expression, the root directory, - * of it contains any directory separators, then treat it isn't a simple - * filename that can be looked up in the cache, but rather appears to - * be the pathname of a file. If so, return a copy of this pathname with - * escapes removed, if requested, and any initial ~username expression - * expanded. - */ - if(cpa_cmd_contains_path(name, name_len)) { - const char *nptr; - if(pca_expand_tilde(pc, name, name_len, literal, &nptr) || - _pn_append_to_path(pc->path, nptr, name_len - (nptr-name), - !literal) == NULL) - return NULL; - return pc->path->name; - }; -/* - * Look up the specified filename in each of the directories of the path, - * in the same order that they were listed in the path, and stop as soon - * as an instance of the file is found. - */ - for(node=pc->head; node; node=node->next) { -/* - * If the directory of the latest node is a relative pathname, - * scan it for files of interest. - */ - if(node->relative) { - rst_CacheMem(node->mem); - if(pca_scan_dir(pc, node->dir, node->mem) < 1) - continue; - node->files = node->mem->files; - node->nfile = node->mem->nfiles; - }; -/* - * Copy the filename into a temporary buffer, while interpretting - * escape characters if needed. - */ - _pn_clear_path(pc->path); - if(_pn_append_to_path(pc->path, name, name_len, !literal) == NULL) - return NULL; -/* - * Perform a binary search for the requested filename. - */ - match = (char **)bsearch(pc->path->name, node->files, node->nfile, - sizeof(*node->files), pca_cmp_file); - if(match) { -/* - * Prepend the pathname in which the directory was found, which we have - * guaranteed to end in a directory separator, to the located filename. - */ - if(_pn_prepend_to_path(pc->path, node->dir, -1, 0) == NULL) - return NULL; -/* - * Return the matching pathname unless it is rejected by the application. - */ - if(!pc->check_fn || (*match)[0] == PCA_F_WANTED || - ((*match)[0]==PCA_F_ENIGMA && pc->check_fn(pc->data, pc->path->name))){ - (*match)[0] = PCA_F_WANTED; - return pc->path->name; - } else { - *(match)[0] = PCA_F_IGNORE; - }; - }; - }; -/* - * File not found. - */ - return NULL; -} - -/*....................................................................... - * A qsort() comparison function for comparing a filename string to - * a cached filename string pointed to by a (char **) array element. - * This ignores the initial code byte at the start of the cached filename - * string. - * - * Input: - * v1, v2 void * Pointers to the pointers of two strings to be compared. - * Output: - * return int -1 -> v1 < v2. - * 0 -> v1 == v2 - * 1 -> v1 > v2 - */ -static int pca_cmp_file(const void *v1, const void *v2) -{ - const char *file_name = (const char *) v1; - const char **cache_name = (const char **) v2; - return strcmp(file_name, *cache_name + 1); -} - -/*....................................................................... - * The PcaPathConf structure may have options added to it in the future. - * To allow your application to be linked against a shared version of the - * tecla library, without these additions causing your application to - * crash, you should use new_PcaPathConf() to allocate such structures. - * This will set all of the configuration options to their default values, - * which you can then change before passing the structure to - * pca_path_completions(). - * - * Input: - * pc PathCache * The filename cache in which to look for - * file name completions. - * Output: - * return PcaPathConf * The new configuration structure, or NULL - * on error. A descripition of the error - * can be found by calling pca_last_error(pc). - */ -PcaPathConf *new_PcaPathConf(PathCache *pc) -{ - PcaPathConf *ppc; /* The object to be returned */ -/* - * Check the arguments. - */ - if(!pc) - return NULL; -/* - * Allocate the container. - */ - ppc = (PcaPathConf *)malloc(sizeof(PcaPathConf)); - if(!ppc) { - strcpy(pc->errmsg, "Insufficient memory."); - return NULL; - }; -/* - * Before attempting any operation that might fail, initialize the - * container at least up to the point at which it can safely be passed - * to del_PcaPathConf(). - */ - if(pca_init_PcaPathConf(ppc, pc)) - return del_PcaPathConf(ppc); - return ppc; -} - -/*....................................................................... - * Initialize a PcaPathConf configuration structure with defaults. - * - * Input: - * ppc PcaPathConf * The structre to be initialized. - * pc PathCache * The cache in which completions will be looked up. - * Output: - * return int 0 - OK. - * 1 - Error. A description of the error can be - * obtained by calling pca_last_error(pc). - */ -static int pca_init_PcaPathConf(PcaPathConf *ppc, PathCache *pc) -{ -/* - * Check the arguments. - */ - if(!pc) - return 1; -/* - * Set the default options. - */ - ppc->id = PPC_ID_CODE; - ppc->pc = pc; - ppc->escaped = 1; - ppc->file_start = -1; - return 0; -} - -/*....................................................................... - * Delete a PcaPathConf object. - * - * Input: - * ppc PcaPathConf * The object to be deleted. - * Output: - * return PcaPathConf * The deleted object (always NULL). - */ -PcaPathConf *del_PcaPathConf(PcaPathConf *ppc) -{ - if(ppc) { - ppc->pc = NULL; /* It is up to the caller to delete the cache */ -/* - * Delete the container. - */ - free(ppc); - }; - return NULL; -} - -/*....................................................................... - * pca_path_completions() is a completion callback function for use - * directly with cpl_complete_word() or gl_customize_completions(), or - * indirectly from your own completion callback function. It requires - * that a CpaPathArgs object be passed via its 'void *data' argument. - */ -CPL_MATCH_FN(pca_path_completions) -{ - PcaPathConf *ppc; /* The configuration arguments */ - PathCache *pc; /* The cache in which to look for completions */ - PathNode *node; /* A node in the list of directories in the path */ - const char *filename; /* The name of the file being looked at */ - const char *start_path; /* The pointer to the start of the pathname */ - /* in line[]. */ - int word_start; /* The index in line[] corresponding to start_path */ - const char *prefix; /* The file-name prefix being searched for */ - size_t prefix_len; /* The length of the prefix being completed */ - int bot; /* The lowest index of the array not searched yet */ - int top; /* The highest index of the array not searched yet */ -/* - * Check the arguments. - */ - if(!cpl) - return 1; - if(!line || word_end < 0 || !data) { - cpl_record_error(cpl, "pca_path_completions: Invalid arguments."); - return 1; - }; -/* - * Get the configuration arguments. - */ - ppc = (PcaPathConf *) data; -/* - * Check that the callback data is a PcaPathConf structure returned - * by new_PcaPathConf(). - */ - if(ppc->id != PPC_ID_CODE) { - cpl_record_error(cpl, - "Invalid callback data passed to pca_path_completions()"); - return 1; - }; -/* - * Get the filename cache. - */ - pc = ppc->pc; -/* - * Get the start of the file name. If not specified by the caller, - * identify it by searching backwards in the input line for an - * unescaped space or the start of the line. - */ - if(ppc->file_start < 0) { - start_path = _pu_start_of_path(line, word_end); - if(!start_path) { - cpl_record_error(cpl, "Unable to find the start of the file name."); - return 1; - }; - } else { - start_path = line + ppc->file_start; - }; -/* - * Get the index of the start of the word being completed. - */ - word_start = start_path - line; -/* - * Work out the length of the prefix that is bein completed. - */ - prefix_len = word_end - word_start; -/* - * If the word starts with a ~username expression or the root directory, - * of it contains any directory separators, then completion must be - * delegated to cpl_file_completions(). - */ - if(cpa_cmd_contains_path(start_path, prefix_len)) { - cfc_file_start(pc->cfc, word_start); - return cpl_file_completions(cpl, pc->cfc, line, word_end); - }; -/* - * Look up the specified file name in each of the directories of the path, - * in the same order that they were listed in the path, and stop as soon - * as an instance of the file is found. - */ - for(node=pc->head; node; node=node->next) { -/* - * If the directory of the latest node is a relative pathname, - * scan it for files of interest. - */ - if(node->relative) { - rst_CacheMem(node->mem); - if(pca_scan_dir(pc, node->dir, node->mem) < 1) - continue; - node->files = node->mem->files; - node->nfile = node->mem->nfiles; - }; -/* - * If needed, make a copy of the file-name being matched, with - * escapes removed. Note that we need to do this anew every loop - * iteration, because the above call to pca_scan_dir() uses - * pc->path. - */ - prefix = pca_prepare_prefix(pc, start_path, prefix_len, ppc->escaped); - if(!prefix) - return 1; -/* - * The directory entries are sorted, so we can perform a binary - * search for an instance of the prefix being searched for. - */ - bot = 0; - top = node->nfile - 1; - while(top >= bot) { - int mid = (top + bot)/2; - int test = strncmp(node->files[mid]+1, prefix, prefix_len); - if(test > 0) - top = mid - 1; - else if(test < 0) - bot = mid + 1; - else { - top = bot = mid; - break; - }; - }; -/* - * If we found a match, look to see if any of its neigbors also match. - */ - if(top == bot) { - while(--bot >= 0 && strncmp(node->files[bot]+1, prefix, prefix_len) == 0) - ; - while(++top < node->nfile && - strncmp(node->files[top]+1, prefix, prefix_len) == 0) - ; -/* - * We will have gone one too far in each direction. - */ - bot++; - top--; -/* - * Add the completions to the list after checking them against the - * callers requirements. - */ - for( ; bot<=top; bot++) { - char *match = node->files[bot]; -/* - * Form the full pathname of the file. - */ - _pn_clear_path(pc->path); - if(_pn_append_to_path(pc->path, node->dir, -1, 0) == NULL || - _pn_append_to_path(pc->path, match+1, -1, 0) == NULL) { - strcpy(pc->errmsg, "Insufficient memory to complete file name"); - return 1; - }; -/* - * Should the file be included in the list of completions? - */ - if(!pc->check_fn || match[0] == PCA_F_WANTED || - (match[0]==PCA_F_ENIGMA && pc->check_fn(pc->data, pc->path->name))) { - match[0] = PCA_F_WANTED; -/* - * Copy the completion suffix into the work pathname pc->path->name, - * adding backslash escapes if needed. - */ - if(pca_prepare_suffix(pc, match + 1 + prefix_len, - ppc->escaped)) - return 1; -/* - * Record the completion. - */ - if(cpl_add_completion(cpl, line, word_start, word_end, pc->path->name, - "", " ")) - return 1; -/* - * The file was rejected by the application. - */ - } else { - match[0] = PCA_F_IGNORE; - }; - }; - }; - }; -/* - * We now need to search for subdirectories of the current directory which - * have matching prefixes. First, if needed, make a copy of the word being - * matched, with escapes removed. - */ - prefix = pca_prepare_prefix(pc, start_path, prefix_len, ppc->escaped); - if(!prefix) - return 1; -/* - * Now open the current directory. - */ - if(_dr_open_dir(pc->dr, FS_PWD, NULL)) - return 0; -/* - * Scan the current directory for sub-directories whos names start with - * the prefix that we are completing. - */ - while((filename = _dr_next_file(pc->dr))) { -/* - * Does the latest filename match the prefix, and is it a directory? - */ - if(strncmp(filename, prefix, prefix_len) == 0 && _pu_path_is_dir(filename)){ -/* - * Record the completion. - */ - if(pca_prepare_suffix(pc, filename + prefix_len, ppc->escaped) || - cpl_add_completion(cpl, line, word_start, word_end, pc->path->name, - FS_DIR_SEP, FS_DIR_SEP)) - return 1; -/* - * The prefix in pc->path->name will have been overwritten by - * pca_prepare_suffix(). Restore it here. - */ - prefix = pca_prepare_prefix(pc, start_path, prefix_len, ppc->escaped); - if(!prefix) - return 1; - }; - }; - _dr_close_dir(pc->dr); - return 0; -} - -/*....................................................................... - * Using the work buffer pc->path, make a suitably escaped copy of a - * given completion suffix, ready to be passed to cpl_add_completion(). - * - * Input: - * pc PathCache * The filename cache resource object. - * suffix char * The suffix to be copied. - * add_escapes int If true, escape special characters. - * Output: - * return int 0 - OK. - * 1 - Error. - */ -static int pca_prepare_suffix(PathCache *pc, const char *suffix, - int add_escapes) -{ - const char *sptr; /* A pointer into suffix[] */ - int nbsl; /* The number of backslashes to add to the suffix */ - int i; -/* - * How long is the suffix? - */ - int suffix_len = strlen(suffix); -/* - * Clear the work buffer. - */ - _pn_clear_path(pc->path); -/* - * Count the number of backslashes that will have to be added to - * escape spaces, tabs, backslashes and wildcard characters. - */ - nbsl = 0; - if(add_escapes) { - for(sptr = suffix; *sptr; sptr++) { - switch(*sptr) { - case ' ': case '\t': case '\\': case '*': case '?': case '[': - nbsl++; - break; - }; - }; - }; -/* - * Arrange for the output path buffer to have sufficient room for the - * both the suffix and any backslashes that have to be inserted. - */ - if(_pn_resize_path(pc->path, suffix_len + nbsl) == NULL) { - strcpy(pc->errmsg, "Insufficient memory to complete file name"); - return 1; - }; -/* - * If the suffix doesn't need any escapes, copy it directly into the - * work buffer. - */ - if(nbsl==0) { - strcpy(pc->path->name, suffix); - } else { -/* - * Make a copy with special characters escaped? - */ - if(nbsl > 0) { - const char *src = suffix; - char *dst = pc->path->name; - for(i=0; i<suffix_len; i++) { - switch(*src) { - case ' ': case '\t': case '\\': case '*': case '?': case '[': - *dst++ = '\\'; - }; - *dst++ = *src++; - }; - *dst = '\0'; - }; - }; - return 0; -} - -/*....................................................................... - * Return non-zero if the specified string appears to start with a pathname. - * - * Input: - * prefix const char * The filename prefix to check. - * prefix_len int The length of the prefix. - * Output: - * return int 0 - Doesn't start with a path name. - * 1 - Does start with a path name. - */ -static int cpa_cmd_contains_path(const char *prefix, int prefix_len) -{ - int i; -/* - * If the filename starts with a ~, then this implies a ~username - * expression, which constitutes a pathname. - */ - if(*prefix == '~') - return 1; -/* - * If the filename starts with the root directory, then it obviously - * starts with a pathname. - */ - if(prefix_len >= FS_ROOT_DIR_LEN && - strncmp(prefix, FS_ROOT_DIR, FS_ROOT_DIR_LEN) == 0) - return 1; -/* - * Search the prefix for directory separators, returning as soon as - * any are found, since their presence indicates that the filename - * starts with a pathname specification (valid or otherwise). - */ - for(i=0; i<prefix_len; i++) { - if(prefix_len - i >= FS_DIR_SEP_LEN && - strncmp(prefix + i, FS_DIR_SEP, FS_DIR_SEP_LEN) == 0) - return 1; - }; -/* - * The file name doesn't appear to start with a pathname specification. - */ - return 0; -} - -/*....................................................................... - * If needed make a new copy of the prefix being matched, in pc->path->name, - * but with escapes removed. If no escapes are to be removed, simply return - * the original prefix string. - * - * Input: - * pc PathCache * The cache being searched. - * prefix const char * The prefix to be processed. - * prefix_len size_t The length of the prefix. - * escaped int If true, return a copy with escapes removed. - * Output: - * return const char * The prepared prefix, or NULL on error, in - * which case an error message will have been - * left in pc->errmsg. - */ -static const char *pca_prepare_prefix(PathCache *pc, const char *prefix, - size_t prefix_len, int escaped) -{ -/* - * Make a copy with escapes removed? - */ - if(escaped) { - _pn_clear_path(pc->path); - if(_pn_append_to_path(pc->path, prefix, prefix_len, 1) == NULL) { - strcpy(pc->errmsg, "Insufficient memory to complete filename"); - return NULL; - }; - return pc->path->name; - }; - return prefix; -} - -/*....................................................................... - * If backslashes in the filename should be treated as literal - * characters, call the following function with literal=1. Otherwise - * the default is to treat them as escape characters, used for escaping - * spaces etc.. - * - * Input: - * ppc PcaPathConf * The pca_path_completions() configuration object - * to be configured. - * literal int Pass non-zero here to enable literal interpretation - * of backslashes. Pass 0 to turn off literal - * interpretation. - */ -void ppc_literal_escapes(PcaPathConf *ppc, int literal) -{ - if(ppc) - ppc->escaped = !literal; -} - -/*....................................................................... - * Call this function if you know where the index at which the - * filename prefix starts in the input line. Otherwise by default, - * or if you specify start_index to be -1, the filename is taken - * to start after the first unescaped space preceding the cursor, - * or the start of the line, which ever comes first. - * - * Input: - * ppc PcaPathConf * The pca_path_completions() configuration object - * to be configured. - * start_index int The index of the start of the filename in - * the input line, or -1 to select the default. - */ -void ppc_file_start(PcaPathConf *ppc, int start_index) -{ - if(ppc) - ppc->file_start = start_index; -} - -/*....................................................................... - * Expand any ~user expression found at the start of a path, leaving - * either an empty string in pc->path if there is no ~user expression, - * or the corresponding home directory. - * - * Input: - * pc PathCache * The filename cache. - * path const char * The path to expand. - * pathlen int The max number of characters to look at in path[]. - * literal int If true, treat backslashes as literal characters - * instead of escapes. - * Input/Output: - * endp const char * A pointer to the next unprocessed character in - * path[] will be assigned to *endp. - * Output: - * return int 0 - OK - * 1 - Error (a description will have been placed - * in pc->errmsg[]). - */ -static int pca_expand_tilde(PathCache *pc, const char *path, int pathlen, - int literal, const char **endp) -{ - const char *pptr = path; /* A pointer into path[] */ - const char *homedir=NULL; /* A home directory */ -/* - * Clear the pathname buffer. - */ - _pn_clear_path(pc->path); -/* - * If the first character is a tilde, then perform home-directory - * interpolation. - */ - if(*pptr == '~') { -/* - * Skip the tilde character and attempt to read the username that follows - * it, into pc->usrnam[]. - */ - if(pca_read_username(pc, ++pptr, pathlen-1, literal, &pptr)) - return 1; -/* - * Attempt to lookup the home directory of the user. - */ - homedir = _hd_lookup_home_dir(pc->home, pc->usrnam); - if(!homedir) { - strncpy(pc->errmsg, _hd_last_home_dir_error(pc->home), ERRLEN); - pc->errmsg[ERRLEN] = '\0'; - return 1; - }; -/* - * Append the home directory to the pathname string. - */ - if(_pn_append_to_path(pc->path, homedir, -1, 0) == NULL) { - strcpy(pc->errmsg, "Insufficient memory for home directory expansion"); - return 1; - }; - }; -/* - * ~user and ~ are usually followed by a directory separator to - * separate them from the file contained in the home directory. - * If the home directory is the root directory, then we don't want - * to follow the home directory by a directory separator, so we should - * skip over it so that it doesn't get copied into the output pathname - */ - if(homedir && strcmp(homedir, FS_ROOT_DIR) == 0 && - (pptr-path) + FS_DIR_SEP_LEN < pathlen && - strncmp(pptr, FS_DIR_SEP, FS_DIR_SEP_LEN) == 0) { - pptr += FS_DIR_SEP_LEN; - }; -/* - * Return a pointer to the next unprocessed character. - */ - *endp = pptr; - return 0; -} - -/*....................................................................... - * Clear the filename status codes that are recorded before each filename - * in the cache. - * - * Input: - * pc PathCache * The filename cache. - */ -static void pca_remove_marks(PathCache *pc) -{ - PathNode *node; /* A node in the list of directories in the path */ - int i; -/* - * Traverse the absolute directories of the path, clearing the - * filename status marks that precede each filename. - */ - for(node=pc->head; node; node=node->next) { - if(!node->relative) { - for(i=0; i<node->nfile; i++) - *node->files[i] = PCA_F_ENIGMA; - }; - }; - return; -} |