diff options
Diffstat (limited to 'main/common/ledit_vt100.c')
| -rw-r--r-- | main/common/ledit_vt100.c | 626 |
1 files changed, 323 insertions, 303 deletions
diff --git a/main/common/ledit_vt100.c b/main/common/ledit_vt100.c index 0f5c50e..0298a58 100644 --- a/main/common/ledit_vt100.c +++ b/main/common/ledit_vt100.c @@ -1,7 +1,7 @@ /************************************************************************** * * Copyright (c) 2013 Alcatel-Lucent - * + * * Alcatel Lucent licenses this file to You under the Apache License, * Version 2.0 (the "License"); you may not use this file except in * compliance with the License. A copy of the License is contained the @@ -22,7 +22,7 @@ * * This is an alternative to lineedit.c. For those unfamiliar with the * KSH VI-like editing, this is certainly a more intuitive mechanism - * for CLI edit. It uses the VT100 terminal arrow keys for basic + * for CLI edit. It uses the VT100 terminal arrow keys for basic * line and history traversal... * * - UP/DOWN move through the CLI history. @@ -40,38 +40,38 @@ #include "stddefs.h" #include "cli.h" -#define GOT_NUTTIN 0 -#define GOT_ESCAPE 1 -#define GOT_BRACKET 2 - -#define HMAX 16 -#define ESC 0x1B -#define CTLC 0x03 -#define BACKSPACE 0x08 - -#define OPEN_BRACKET '[' -#define VT100_DEL 0x7f -#define VT100_UP 'A' -#define VT100_DOWN 'B' -#define VT100_RIGHT 'C' -#define VT100_LEFT 'D' - -#define EDITFILELINE 1 -#define EDITCMDLINE 2 - -static int stridx; /* store index */ -static int shwidx; /* show index */ -static int srchidx; /* search index */ -static int lastsize; /* size of last command */ -static char curChar; /* latest input character */ -static char *curPos; /* current position on command line */ -static char *startOfLine; /* start of command line */ -static int lineLen; /* length of line */ -static char cmdhistory[HMAX+1][CMDLINESIZE];/* array for command history */ - -static void shownext(void), showprev(void), ldelete(void), backspace(void); -static void newchar(char c); -static void backup(int count); +#define GOT_NUTTIN 0 +#define GOT_ESCAPE 1 +#define GOT_BRACKET 2 + +#define HMAX 16 +#define ESC 0x1B +#define CTLC 0x03 +#define BACKSPACE 0x08 + +#define OPEN_BRACKET '[' +#define VT100_DEL 0x7f +#define VT100_UP 'A' +#define VT100_DOWN 'B' +#define VT100_RIGHT 'C' +#define VT100_LEFT 'D' + +#define EDITFILELINE 1 +#define EDITCMDLINE 2 + +static int stridx; /* store index */ +static int shwidx; /* show index */ +static int srchidx; /* search index */ +static int lastsize; /* size of last command */ +static char curChar; /* latest input character */ +static char *curPos; /* current position on command line */ +static char *startOfLine; /* start of command line */ +static int lineLen; /* length of line */ +static char cmdhistory[HMAX+1][CMDLINESIZE];/* array for command history */ + +static void shownext(void), showprev(void), ldelete(void), backspace(void); +static void newchar(char c); +static void backup(int count); /* lineeditor(): * This is a simpler version of lineeditor() (as found in lineedit.c). @@ -86,117 +86,118 @@ static void backup(int count); static char * lineeditor(char *line_to_edit,int type) { - int state; - - if (type == EDITCMDLINE) { - if (getchar() != OPEN_BRACKET) { - putchar('\n'); - *line_to_edit = 0; - return((char *)0); - } - } - - startOfLine = line_to_edit; - curPos = line_to_edit; - while(*curPos != ESC) - curPos++; - - *curPos = 0; /* Remove the escape character from the line */ - lineLen = (ulong)curPos - (ulong)startOfLine; - if (lineLen > 0) { - curPos--; - putstr(" \b\b"); - } - else - putstr(" \b"); - - state = GOT_BRACKET; - lastsize = 0; - shwidx = stridx; - srchidx = stridx; - while(1) { - curChar = getchar(); - switch(curChar) { - case CTLC: - putchar('\n'); - *line_to_edit = 0; - return((char *)0); - case VT100_UP: - if (state == GOT_BRACKET) { - if (type == EDITCMDLINE) - showprev(); - state = GOT_NUTTIN; - } - else { - newchar(curChar); - } - break; - case VT100_DOWN: - if (state == GOT_BRACKET) { - if (type == EDITCMDLINE) - shownext(); - state = GOT_NUTTIN; - } - else { - newchar(curChar); - } - break; - case VT100_RIGHT: - if (state == GOT_BRACKET) { - if (curPos < startOfLine+lineLen) { - putchar(*curPos); - curPos++; - } - state = GOT_NUTTIN; - } - else { - newchar(curChar); - } - break; - case VT100_LEFT: - if (state == GOT_BRACKET) { - if (curPos > startOfLine) { - putchar('\b'); - curPos--; - } - state = GOT_NUTTIN; - } - else { - newchar(curChar); - } - break; - case OPEN_BRACKET: - if (state == GOT_ESCAPE) { - state = GOT_BRACKET; - } - else { - newchar(curChar); - } - break; - case ESC: - state = GOT_ESCAPE; - break; - case VT100_DEL: - if (curPos != (startOfLine + lineLen)) - ldelete(); - break; - case '\b': - if (curPos > startOfLine) - backspace(); - break; - case '\n': - case '\r': - putchar('\n'); - if (lineLen == 0) - return((char *)0); - *(char *)(startOfLine + lineLen) = '\0'; - return(startOfLine); - default: - newchar(curChar); - break; - } - } - return((char *)0); + int state; + + if(type == EDITCMDLINE) { + if(getchar() != OPEN_BRACKET) { + putchar('\n'); + *line_to_edit = 0; + return((char *)0); + } + } + + startOfLine = line_to_edit; + curPos = line_to_edit; + while(*curPos != ESC) { + curPos++; + } + + *curPos = 0; /* Remove the escape character from the line */ + lineLen = (ulong)curPos - (ulong)startOfLine; + if(lineLen > 0) { + curPos--; + putstr(" \b\b"); + } else { + putstr(" \b"); + } + + state = GOT_BRACKET; + lastsize = 0; + shwidx = stridx; + srchidx = stridx; + while(1) { + curChar = getchar(); + switch(curChar) { + case CTLC: + putchar('\n'); + *line_to_edit = 0; + return((char *)0); + case VT100_UP: + if(state == GOT_BRACKET) { + if(type == EDITCMDLINE) { + showprev(); + } + state = GOT_NUTTIN; + } else { + newchar(curChar); + } + break; + case VT100_DOWN: + if(state == GOT_BRACKET) { + if(type == EDITCMDLINE) { + shownext(); + } + state = GOT_NUTTIN; + } else { + newchar(curChar); + } + break; + case VT100_RIGHT: + if(state == GOT_BRACKET) { + if(curPos < startOfLine+lineLen) { + putchar(*curPos); + curPos++; + } + state = GOT_NUTTIN; + } else { + newchar(curChar); + } + break; + case VT100_LEFT: + if(state == GOT_BRACKET) { + if(curPos > startOfLine) { + putchar('\b'); + curPos--; + } + state = GOT_NUTTIN; + } else { + newchar(curChar); + } + break; + case OPEN_BRACKET: + if(state == GOT_ESCAPE) { + state = GOT_BRACKET; + } else { + newchar(curChar); + } + break; + case ESC: + state = GOT_ESCAPE; + break; + case VT100_DEL: + if(curPos != (startOfLine + lineLen)) { + ldelete(); + } + break; + case '\b': + if(curPos > startOfLine) { + backspace(); + } + break; + case '\n': + case '\r': + putchar('\n'); + if(lineLen == 0) { + return((char *)0); + } + *(char *)(startOfLine + lineLen) = '\0'; + return(startOfLine); + default: + newchar(curChar); + break; + } + } + return((char *)0); } /* line_edit() & file_line_edit(): @@ -209,117 +210,123 @@ lineeditor(char *line_to_edit,int type) char * line_edit(char *line_to_edit) { - return(lineeditor(line_to_edit,EDITCMDLINE)); + return(lineeditor(line_to_edit,EDITCMDLINE)); } char * file_line_edit(char *line_to_edit) { - return(lineeditor(line_to_edit,EDITFILELINE)); + return(lineeditor(line_to_edit,EDITFILELINE)); } static void ldelete(void) { - char *eol, *now; - int cnt; - - if (lineLen == 0) - return; - cnt = 0; - eol = startOfLine + lineLen - 1; - now = curPos; + char *eol, *now; + int cnt; + + if(lineLen == 0) { + return; + } + cnt = 0; + eol = startOfLine + lineLen - 1; + now = curPos; #if 0 - if (curPos != eol) { - while(curPos <= eol) { - *curPos = *(curPos+1); - curPos++; - cnt++; - } - putbytes(now,cnt-1); - putchar(' '); - backup((int)cnt); - } - else { - putstr(" \b\b"); - *eol = '\0'; - now--; - } + if(curPos != eol) { + while(curPos <= eol) { + *curPos = *(curPos+1); + curPos++; + cnt++; + } + putbytes(now,cnt-1); + putchar(' '); + backup((int)cnt); + } else { + putstr(" \b\b"); + *eol = '\0'; + now--; + } #else - while(curPos <= eol) { - *curPos = *(curPos+1); - curPos++; - cnt++; - } - putbytes(now,cnt-1); - putchar(' '); - backup((int)cnt); + while(curPos <= eol) { + *curPos = *(curPos+1); + curPos++; + cnt++; + } + putbytes(now,cnt-1); + putchar(' '); + backup((int)cnt); #endif - curPos = now; - lineLen--; - if (lineLen == 0) - curPos = startOfLine; + curPos = now; + lineLen--; + if(lineLen == 0) { + curPos = startOfLine; + } } static void backup(int count) { - char string[CMDLINESIZE]; - int i; - - if (count <= 0) - return; - *string = '\0'; - for(i=0;i<count;i++) - strcat(string,"\b"); - putbytes(string,count); + char string[CMDLINESIZE]; + int i; + + if(count <= 0) { + return; + } + *string = '\0'; + for(i=0; i<count; i++) { + strcat(string,"\b"); + } + putbytes(string,count); } static void backspace(void) { - curPos--; - putchar('\b'); - ldelete(); + curPos--; + putchar('\b'); + ldelete(); } static void newchar(char c) { - char string[CMDLINESIZE]; - - if (curPos == startOfLine + lineLen) { - putchar(c); - *curPos++ = c; - lineLen++; - } - else { - if (!isprint(c)) - return; - putchar(c); - putstr(curPos); - backup((int)strlen(curPos)); - strncpy(string,curPos,CMDLINESIZE-1); - *curPos++ = c; - strcpy(curPos,string); - lineLen++; - } + char string[CMDLINESIZE]; + + if(curPos == startOfLine + lineLen) { + putchar(c); + *curPos++ = c; + lineLen++; + } else { + if(!isprint(c)) { + return; + } + putchar(c); + putstr(curPos); + backup((int)strlen(curPos)); + strncpy(string,curPos,CMDLINESIZE-1); + *curPos++ = c; + strcpy(curPos,string); + lineLen++; + } } static void lerase(int count) { - char string[CMDLINESIZE]; - int i; - - if (count <= 0) - return; - *string = '\0'; - for(i=0;i<count;i++) - strcat(string," "); - for(i=0;i<count;i++) - strcat(string,"\b"); - putbytes(string,count*2); + char string[CMDLINESIZE]; + int i; + + if(count <= 0) { + return; + } + *string = '\0'; + for(i=0; i<count; i++) { + strcat(string," "); + } + for(i=0; i<count; i++) { + strcat(string,"\b"); + } + putbytes(string,count*2); } /* showdone(): @@ -329,93 +336,101 @@ lerase(int count) static void showdone(int idx) { - if (idx == HMAX) { - printf("History buffer empty.\007\n"); - return; - } - - backup((int)(curPos - startOfLine)); - lineLen = strlen(cmdhistory[shwidx]); - putbytes(cmdhistory[shwidx],lineLen); - lerase((int)(lastsize-lineLen)); - strcpy(startOfLine,cmdhistory[shwidx]); - curPos = startOfLine + lineLen; - lastsize = lineLen; + if(idx == HMAX) { + printf("History buffer empty.\007\n"); + return; + } + + backup((int)(curPos - startOfLine)); + lineLen = strlen(cmdhistory[shwidx]); + putbytes(cmdhistory[shwidx],lineLen); + lerase((int)(lastsize-lineLen)); + strcpy(startOfLine,cmdhistory[shwidx]); + curPos = startOfLine + lineLen; + lastsize = lineLen; } /* showprev() & shownext(): - * Show previous or next command in history list based on + * Show previous or next command in history list based on * the current position in the list being established by * the shwidx variable. */ static void showprev(void) { - int i; - - if (shwidx == 0) - shwidx = HMAX-1; - else - shwidx--; - - for(i=0;i<HMAX;i++) { - if (*cmdhistory[shwidx]) - break; - if (shwidx == 0) - shwidx = HMAX-1; - else - shwidx--; - } - showdone(i); + int i; + + if(shwidx == 0) { + shwidx = HMAX-1; + } else { + shwidx--; + } + + for(i=0; i<HMAX; i++) { + if(*cmdhistory[shwidx]) { + break; + } + if(shwidx == 0) { + shwidx = HMAX-1; + } else { + shwidx--; + } + } + showdone(i); } static void shownext(void) { - int i; - - if (shwidx == HMAX-1) - shwidx = 0; - else - shwidx++; - - for(i=0;i<HMAX;i++) { - if (*cmdhistory[shwidx]) - break; - if (shwidx == HMAX) - shwidx = 0; - else - shwidx++; - } - showdone(i); + int i; + + if(shwidx == HMAX-1) { + shwidx = 0; + } else { + shwidx++; + } + + for(i=0; i<HMAX; i++) { + if(*cmdhistory[shwidx]) { + break; + } + if(shwidx == HMAX) { + shwidx = 0; + } else { + shwidx++; + } + } + showdone(i); } /* History(): * Command used at the CLI to allow the user to dump the content * of the history buffer. */ -char * HistoryHelp[] = { - "Display command history", - "", - 0, +char *HistoryHelp[] = { + "Display command history", + "", + 0, }; - + int History(int argc,char *argv[]) { - int i; - - for(i=stridx;i<HMAX;i++) { - if (cmdhistory[i][0]) - printf("%s\n",cmdhistory[i]); - } - if (stridx) { - for(i=0;i<stridx;i++) { - if (cmdhistory[i][0]) - printf("%s\n",cmdhistory[i]); - } - } - return(CMD_SUCCESS); + int i; + + for(i=stridx; i<HMAX; i++) { + if(cmdhistory[i][0]) { + printf("%s\n",cmdhistory[i]); + } + } + if(stridx) { + for(i=0; i<stridx; i++) { + if(cmdhistory[i][0]) { + printf("%s\n",cmdhistory[i]); + } + } + } + return(CMD_SUCCESS); } /* historyinit(): @@ -424,11 +439,12 @@ History(int argc,char *argv[]) void historyinit() { - int i; + int i; - shwidx = stridx = 0; - for (i=0;i<HMAX;i++) - cmdhistory[i][0] = 0; + shwidx = stridx = 0; + for(i=0; i<HMAX; i++) { + cmdhistory[i][0] = 0; + } } /* historylog(): @@ -439,24 +455,28 @@ historyinit() void historylog(char *cmdline) { - int idx; + int idx; - if (strlen(cmdline) >= CMDLINESIZE) - return; + if(strlen(cmdline) >= CMDLINESIZE) { + return; + } - if (stridx == 0) - idx = HMAX-1; - else - idx = stridx -1; + if(stridx == 0) { + idx = HMAX-1; + } else { + idx = stridx -1; + } - /* don't store if this command is same as last command */ - if (strcmp(cmdhistory[idx],cmdline) == 0) - return; + /* don't store if this command is same as last command */ + if(strcmp(cmdhistory[idx],cmdline) == 0) { + return; + } - if (stridx == HMAX) - stridx = 0; + if(stridx == HMAX) { + stridx = 0; + } - strcpy(cmdhistory[stridx++],cmdline); + strcpy(cmdhistory[stridx++],cmdline); } #endif |