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Diffstat (limited to 'ncurses-5.3/ncurses/tinfo/read_entry.c')
-rw-r--r--ncurses-5.3/ncurses/tinfo/read_entry.c503
1 files changed, 0 insertions, 503 deletions
diff --git a/ncurses-5.3/ncurses/tinfo/read_entry.c b/ncurses-5.3/ncurses/tinfo/read_entry.c
deleted file mode 100644
index 6e55c83..0000000
--- a/ncurses-5.3/ncurses/tinfo/read_entry.c
+++ /dev/null
@@ -1,503 +0,0 @@
-/****************************************************************************
- * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc. *
- * *
- * 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, distribute with modifications, sublicense, and/or sell *
- * copies of the Software, and to permit persons to whom the Software is *
- * furnished to do so, subject to the following conditions: *
- * *
- * The above copyright notice and this permission notice shall be included *
- * in all copies or substantial portions of the Software. *
- * *
- * 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. *
- * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
- * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
- * *
- * Except as contained in this notice, the name(s) of the above copyright *
- * holders shall not be used in advertising or otherwise to promote the *
- * sale, use or other dealings in this Software without prior written *
- * authorization. *
- ****************************************************************************/
-
-/****************************************************************************
- * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
- * and: Eric S. Raymond <esr@snark.thyrsus.com> *
- ****************************************************************************/
-
-/*
- * read_entry.c -- Routine for reading in a compiled terminfo file
- *
- */
-
-#include <curses.priv.h>
-
-#include <tic.h>
-#include <term_entry.h>
-
-MODULE_ID("$Id$")
-
-#if !HAVE_TELL
-#define tell(fd) 0 /* lseek() is POSIX, but not tell() - odd... */
-#endif
-
-/*
- * int
- * _nc_read_file_entry(filename, ptr)
- *
- * Read the compiled terminfo entry in the given file into the
- * structure pointed to by ptr, allocating space for the string
- * table.
- */
-
-#undef BYTE
-#define BYTE(p,n) (unsigned char)((p)[n])
-
-#define IS_NEG1(p) ((BYTE(p,0) == 0377) && (BYTE(p,1) == 0377))
-#define IS_NEG2(p) ((BYTE(p,0) == 0376) && (BYTE(p,1) == 0377))
-#define LOW_MSB(p) (BYTE(p,0) + 256*BYTE(p,1))
-
-static bool have_tic_directory = FALSE;
-static bool keep_tic_directory = FALSE;
-
-/*
- * Record the "official" location of the terminfo directory, according to
- * the place where we're writing to, or the normal default, if not.
- */
-NCURSES_EXPORT(const char *)
-_nc_tic_dir(const char *path)
-{
- static const char *result = TERMINFO;
-
- if (!keep_tic_directory) {
- if (path != 0) {
- result = path;
- have_tic_directory = TRUE;
- } else if (!have_tic_directory && use_terminfo_vars()) {
- char *envp;
- if ((envp = getenv("TERMINFO")) != 0)
- return _nc_tic_dir(envp);
- }
- }
- return result;
-}
-
-/*
- * Special fix to prevent the terminfo directory from being moved after tic
- * has chdir'd to it. If we let it be changed, then if $TERMINFO has a
- * relative path, we'll lose track of the actual directory.
- */
-NCURSES_EXPORT(void)
-_nc_keep_tic_dir(const char *path)
-{
- _nc_tic_dir(path);
- keep_tic_directory = TRUE;
-}
-
-static void
-convert_shorts(char *buf, short *Numbers, int count)
-{
- int i;
- for (i = 0; i < count; i++) {
- if (IS_NEG1(buf + 2 * i))
- Numbers[i] = ABSENT_NUMERIC;
- else if (IS_NEG2(buf + 2 * i))
- Numbers[i] = CANCELLED_NUMERIC;
- else
- Numbers[i] = LOW_MSB(buf + 2 * i);
- TR(TRACE_DATABASE, ("get Numbers[%d]=%d", i, Numbers[i]));
- }
-}
-
-static void
-convert_strings(char *buf, char **Strings, int count, int size, char *table)
-{
- int i;
- char *p;
-
- for (i = 0; i < count; i++) {
- if (IS_NEG1(buf + 2 * i)) {
- Strings[i] = ABSENT_STRING;
- } else if (IS_NEG2(buf + 2 * i)) {
- Strings[i] = CANCELLED_STRING;
- } else if (LOW_MSB(buf + 2 * i) > size) {
- Strings[i] = ABSENT_STRING;
- } else {
- Strings[i] = (LOW_MSB(buf + 2 * i) + table);
- TR(TRACE_DATABASE, ("Strings[%d] = %s", i, _nc_visbuf(Strings[i])));
- }
-
- /* make sure all strings are NUL terminated */
- if (VALID_STRING(Strings[i])) {
- for (p = Strings[i]; p <= table + size; p++)
- if (*p == '\0')
- break;
- /* if there is no NUL, ignore the string */
- if (p > table + size)
- Strings[i] = ABSENT_STRING;
- }
- }
-}
-
-#define read_shorts(fd, buf, count) (read(fd, buf, (count)*2) == (count)*2)
-
-#define even_boundary(value) \
- if ((value) % 2 != 0) read(fd, buf, 1)
-
-static int
-read_termtype(int fd, TERMTYPE * ptr)
-/* return 1 if read, 0 if not found or garbled */
-{
- int name_size, bool_count, num_count, str_count, str_size;
- int i;
- char buf[MAX_ENTRY_SIZE];
-
- TR(TRACE_DATABASE, ("READ termtype header @%d", tell(fd)));
-
- memset(ptr, 0, sizeof(*ptr));
-
- /* grab the header */
- if (!read_shorts(fd, buf, 6)
- || LOW_MSB(buf) != MAGIC) {
- return (0);
- }
-
- _nc_free_termtype(ptr);
- name_size = LOW_MSB(buf + 2);
- bool_count = LOW_MSB(buf + 4);
- num_count = LOW_MSB(buf + 6);
- str_count = LOW_MSB(buf + 8);
- str_size = LOW_MSB(buf + 10);
-
- TR(TRACE_DATABASE,
- ("TERMTYPE name_size=%d, bool=%d/%d, num=%d/%d str=%d/%d(%d)",
- name_size, bool_count, BOOLCOUNT, num_count, NUMCOUNT,
- str_count, STRCOUNT, str_size));
- if (name_size < 0
- || bool_count < 0
- || num_count < 0
- || str_count < 0
- || str_size < 0) {
- return (0);
- }
-
- if (str_size) {
- /* try to allocate space for the string table */
- if (str_count * 2 >= (int) sizeof(buf)
- || (ptr->str_table = typeMalloc(char, (unsigned) str_size)) == 0) {
- return (0);
- }
- } else {
- str_count = 0;
- }
-
- /* grab the name (a null-terminate string) */
- read(fd, buf, min(MAX_NAME_SIZE, (unsigned) name_size));
- buf[MAX_NAME_SIZE] = '\0';
- ptr->term_names = typeCalloc(char, strlen(buf) + 1);
- if (ptr->term_names == NULL) {
- return (0);
- }
- (void) strcpy(ptr->term_names, buf);
- if (name_size > MAX_NAME_SIZE)
- lseek(fd, (off_t) (name_size - MAX_NAME_SIZE), 1);
-
- /* grab the booleans */
- if ((ptr->Booleans = typeCalloc(char, max(BOOLCOUNT, bool_count))) == 0
- || read(fd, ptr->Booleans, (unsigned) bool_count) < bool_count) {
- return (0);
- }
-
- /*
- * If booleans end on an odd byte, skip it. The machine they
- * originally wrote terminfo on must have been a 16-bit
- * word-oriented machine that would trap out if you tried a
- * word access off a 2-byte boundary.
- */
- even_boundary(name_size + bool_count);
-
- /* grab the numbers */
- if ((ptr->Numbers = typeCalloc(short, max(NUMCOUNT, num_count))) == 0
- || !read_shorts(fd, buf, num_count)) {
- return (0);
- }
- convert_shorts(buf, ptr->Numbers, num_count);
-
- if ((ptr->Strings = typeCalloc(char *, max(STRCOUNT, str_count))) == 0)
- return (0);
-
- if (str_count) {
- /* grab the string offsets */
- if (!read_shorts(fd, buf, str_count)) {
- return (0);
- }
- /* finally, grab the string table itself */
- if (read(fd, ptr->str_table, (unsigned) str_size) != str_size)
- return (0);
- convert_strings(buf, ptr->Strings, str_count, str_size, ptr->str_table);
- }
-#if NCURSES_XNAMES
-
- ptr->num_Booleans = BOOLCOUNT;
- ptr->num_Numbers = NUMCOUNT;
- ptr->num_Strings = STRCOUNT;
-
- /*
- * Read extended entries, if any, after the normal end of terminfo data.
- */
- even_boundary(str_size);
- TR(TRACE_DATABASE, ("READ extended_header @%d", tell(fd)));
- if (_nc_user_definable && read_shorts(fd, buf, 5)) {
- int ext_bool_count = LOW_MSB(buf + 0);
- int ext_num_count = LOW_MSB(buf + 2);
- int ext_str_count = LOW_MSB(buf + 4);
- int ext_str_size = LOW_MSB(buf + 6);
- int ext_str_limit = LOW_MSB(buf + 8);
- int need = (ext_bool_count + ext_num_count + ext_str_count);
- int base = 0;
-
- if (need >= (int) sizeof(buf)
- || ext_str_size >= (int) sizeof(buf)
- || ext_str_limit >= (int) sizeof(buf)
- || ext_bool_count < 0
- || ext_num_count < 0
- || ext_str_count < 0
- || ext_str_size < 0
- || ext_str_limit < 0)
- return (0);
-
- ptr->num_Booleans = BOOLCOUNT + ext_bool_count;
- ptr->num_Numbers = NUMCOUNT + ext_num_count;
- ptr->num_Strings = STRCOUNT + ext_str_count;
-
- ptr->Booleans = typeRealloc(char, ptr->num_Booleans, ptr->Booleans);
- ptr->Numbers = typeRealloc(short, ptr->num_Numbers, ptr->Numbers);
- ptr->Strings = typeRealloc(char *, ptr->num_Strings, ptr->Strings);
-
- TR(TRACE_DATABASE, ("extended header is %d/%d/%d(%d:%d)",
- ext_bool_count, ext_num_count, ext_str_count,
- ext_str_size, ext_str_limit));
-
- TR(TRACE_DATABASE, ("READ %d extended-booleans @%d",
- ext_bool_count, tell(fd)));
- if ((ptr->ext_Booleans = ext_bool_count) != 0) {
- if (read(fd, ptr->Booleans + BOOLCOUNT, (unsigned)
- ext_bool_count) != ext_bool_count)
- return (0);
- }
- even_boundary(ext_bool_count);
-
- TR(TRACE_DATABASE, ("READ %d extended-numbers @%d",
- ext_num_count, tell(fd)));
- if ((ptr->ext_Numbers = ext_num_count) != 0) {
- if (!read_shorts(fd, buf, ext_num_count))
- return (0);
- TR(TRACE_DATABASE, ("Before converting extended-numbers"));
- convert_shorts(buf, ptr->Numbers + NUMCOUNT, ext_num_count);
- }
-
- TR(TRACE_DATABASE, ("READ extended-offsets @%d", tell(fd)));
- if ((ext_str_count || need)
- && !read_shorts(fd, buf, ext_str_count + need))
- return (0);
-
- TR(TRACE_DATABASE, ("READ %d bytes of extended-strings @%d",
- ext_str_limit, tell(fd)));
-
- if (ext_str_limit) {
- if ((ptr->ext_str_table = typeMalloc(char, ext_str_limit)) == 0)
- return (0);
- if (read(fd, ptr->ext_str_table, ext_str_limit) != ext_str_limit)
- return (0);
- TR(TRACE_DATABASE, ("first extended-string is %s", _nc_visbuf(ptr->ext_str_table)));
- }
-
- if ((ptr->ext_Strings = ext_str_count) != 0) {
- TR(TRACE_DATABASE,
- ("Before computing extended-string capabilities str_count=%d, ext_str_count=%d",
- str_count, ext_str_count));
- convert_strings(buf, ptr->Strings + str_count, ext_str_count,
- ext_str_limit, ptr->ext_str_table);
- for (i = ext_str_count - 1; i >= 0; i--) {
- TR(TRACE_DATABASE, ("MOVE from [%d:%d] %s",
- i, i + str_count,
- _nc_visbuf(ptr->Strings[i + str_count])));
- ptr->Strings[i + STRCOUNT] = ptr->Strings[i + str_count];
- if (VALID_STRING(ptr->Strings[i + STRCOUNT]))
- base += (strlen(ptr->Strings[i + STRCOUNT]) + 1);
- TR(TRACE_DATABASE, ("... to [%d] %s",
- i + STRCOUNT,
- _nc_visbuf(ptr->Strings[i + STRCOUNT])));
- }
- }
-
- if (need) {
- if ((ptr->ext_Names = typeCalloc(char *, need)) == 0)
- return (0);
- TR(TRACE_DATABASE,
- ("ext_NAMES starting @%d in extended_strings, first = %s",
- base, _nc_visbuf(ptr->ext_str_table + base)));
- convert_strings(buf + (2 * ext_str_count), ptr->ext_Names, need,
- ext_str_limit, ptr->ext_str_table + base);
- }
-
- T(("...done reading terminfo bool %d(%d) num %d(%d) str %d(%d)",
- ptr->num_Booleans, ptr->ext_Booleans,
- ptr->num_Numbers, ptr->ext_Numbers,
- ptr->num_Strings, ptr->ext_Strings));
-
- TR(TRACE_DATABASE, ("extend: num_Booleans:%d", ptr->num_Booleans));
- } else
-#endif /* NCURSES_XNAMES */
- {
- T(("...done reading terminfo bool %d num %d str %d",
- bool_count, num_count, str_count));
-#if NCURSES_XNAMES
- TR(TRACE_DATABASE, ("normal: num_Booleans:%d", ptr->num_Booleans));
-#endif
- }
-
- for (i = bool_count; i < BOOLCOUNT; i++)
- ptr->Booleans[i] = FALSE;
- for (i = num_count; i < NUMCOUNT; i++)
- ptr->Numbers[i] = ABSENT_NUMERIC;
- for (i = str_count; i < STRCOUNT; i++)
- ptr->Strings[i] = ABSENT_STRING;
-
- return (1);
-}
-
-NCURSES_EXPORT(int)
-_nc_read_file_entry
-(const char *const filename, TERMTYPE * ptr)
-/* return 1 if read, 0 if not found or garbled */
-{
- int code, fd = -1;
-
- if (_nc_access(filename, R_OK) < 0
- || (fd = open(filename, O_RDONLY | O_BINARY)) < 0) {
- T(("cannot open terminfo %s (errno=%d)", filename, errno));
- return (0);
- }
-
- T(("read terminfo %s", filename));
- if ((code = read_termtype(fd, ptr)) == 0)
- _nc_free_termtype(ptr);
- close(fd);
-
- return (code);
-}
-
-/*
- * Build a terminfo pathname and try to read the data. Returns 1 on success,
- * 0 on failure.
- */
-static int
-_nc_read_tic_entry(char *const filename,
- const char *const dir, const char *ttn, TERMTYPE * const tp)
-{
-/* maximum safe length of terminfo root directory name */
-#define MAX_TPATH (PATH_MAX - MAX_ALIAS - 6)
-
- if (strlen(dir) > MAX_TPATH)
- return 0;
- (void) sprintf(filename, "%s/%s", dir, ttn);
- return _nc_read_file_entry(filename, tp);
-}
-
-/*
- * Process the list of :-separated directories, looking for the terminal type.
- * We don't use strtok because it does not show us empty tokens.
- */
-static int
-_nc_read_terminfo_dirs(const char *dirs, char *const filename, const char *const
- ttn, TERMTYPE * const tp)
-{
- char *list, *a;
- const char *b;
- int code = 0;
-
- /* we'll modify the argument, so we must copy */
- if ((b = a = list = strdup(dirs)) == NULL)
- return (0);
-
- for (;;) {
- int c = *a;
- if (c == 0 || c == NCURSES_PATHSEP) {
- *a = 0;
- if ((b + 1) >= a)
- b = TERMINFO;
- if (_nc_read_tic_entry(filename, b, ttn, tp) == 1) {
- code = 1;
- break;
- }
- b = a + 1;
- if (c == 0)
- break;
- }
- a++;
- }
-
- free(list);
- return (code);
-}
-
-/*
- * _nc_read_entry(char *tn, char *filename, TERMTYPE *tp)
- *
- * Find and read the compiled entry for a given terminal type,
- * if it exists. We take pains here to make sure no combination
- * of environment variables and terminal type name can be used to
- * overrun the file buffer.
- */
-
-NCURSES_EXPORT(int)
-_nc_read_entry
-(const char *const tn, char *const filename, TERMTYPE * const tp)
-{
- char *envp;
- char ttn[MAX_ALIAS + 3];
-
- /* truncate the terminal name to prevent dangerous buffer airline */
- (void) sprintf(ttn, "%c/%.*s", *tn, MAX_ALIAS, tn);
-
- /* This is System V behavior, in conjunction with our requirements for
- * writing terminfo entries.
- */
- if (have_tic_directory
- && _nc_read_tic_entry(filename, _nc_tic_dir(0), ttn, tp) == 1)
- return 1;
-
- if (use_terminfo_vars()) {
- if ((envp = getenv("TERMINFO")) != 0
- && _nc_read_tic_entry(filename, _nc_tic_dir(envp), ttn, tp) == 1)
- return 1;
-
- /* this is an ncurses extension */
- if ((envp = _nc_home_terminfo()) != 0) {
- if (_nc_read_tic_entry(filename, envp, ttn, tp) == 1) {
- return (1);
- }
- }
-
- /* this is an ncurses extension */
- if ((envp = getenv("TERMINFO_DIRS")) != 0)
- return _nc_read_terminfo_dirs(envp, filename, ttn, tp);
- }
-
- /* Try the system directory. Note that the TERMINFO_DIRS value, if
- * defined by the configure script, begins with a ":", which will be
- * interpreted as TERMINFO.
- */
-#ifdef TERMINFO_DIRS
- return _nc_read_terminfo_dirs(TERMINFO_DIRS, filename, ttn, tp);
-#else
- return _nc_read_tic_entry(filename, TERMINFO, ttn, tp);
-#endif
-}
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