/tags/rxvt-2-7-6/src/misc.c
C | 373 lines | 233 code | 44 blank | 96 comment | 105 complexity | 0b7f0648520c44f1f035304da4514c87 MD5 | raw file
- /*--------------------------------*-C-*---------------------------------*
- * File: misc.c
- *----------------------------------------------------------------------*
- * $Id: misc.c 1226 2000-10-17 06:04:45Z gcw $
- *
- * All portions of code are copyright by their respective author/s.
- * Copyright (C) 1996 mj olesen <olesen@me.QueensU.CA> Queen's Univ at Kingston
- * Copyright (C) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de>
- * Copyright (C) 1998,1999,2000 Geoff Wing <gcw@pobox.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *----------------------------------------------------------------------*/
- #include "../config.h" /* NECESSARY */
- #include "rxvt.h" /* NECESSARY */
- #include "misc.intpro" /* PROTOS for internal routines */
- /* EXTPROTO */
- char *
- rxvt_r_basename(const char *str)
- {
- char *base = STRRCHR(str, '/');
- return (char *)(base ? base + 1 : str);
- }
- /*
- * Print an error message
- */
- /* EXTPROTO */
- void
- rxvt_print_error(const char *fmt,...)
- {
- va_list arg_ptr;
- va_start(arg_ptr, fmt);
- fprintf(stderr, APL_NAME ": ");
- vfprintf(stderr, fmt, arg_ptr);
- fprintf(stderr, "\n");
- va_end(arg_ptr);
- }
- /*
- * check that the first characters of S1 match S2
- *
- * No Match
- * return: 0
- * Match
- * return: STRLEN (S2)
- */
- /* EXTPROTO */
- int
- rxvt_Str_match(const char *s1, const char *s2)
- {
- int n = STRLEN(s2);
- return ((STRNCMP(s1, s2, n) == 0) ? n : 0);
- }
- /* EXTPROTO */
- const char *
- rxvt_Str_skip_space(const char *str)
- {
- if (str)
- while (*str && isspace(*str))
- str++;
- return str;
- }
- /*
- * remove leading/trailing space and strip-off leading/trailing quotes.
- * in place.
- */
- /* EXTPROTO */
- char *
- rxvt_Str_trim(char *str)
- {
- char *r, *s;
- int n;
- if (!str)
- return NULL;
- if (!*str) /* shortcut */
- return str;
- /* skip leading spaces */
- for (s = str; *s && isspace(*s); s++) ;
- /* goto end of string */
- for (n = 0, r = s; *r++; n++) ;
- r -= 2;
- /* dump return */
- if (n > 0 && *r == '\n')
- n--, r--;
- /* backtrack along trailing spaces */
- for (; n > 0 && isspace(*r); r--, n--) ;
- /* skip matching leading/trailing quotes */
- if (*s == '"' && *r == '"' && n > 1) {
- s++;
- n -= 2;
- }
- /* copy back over: forwards copy */
- for (r = str; n; n--)
- *r++ = *s++;
- *r = '\0';
- return str;
- }
- /*
- * in-place interpretation of string:
- *
- * backslash-escaped: "\a\b\E\e\n\r\t", "\octal"
- * Ctrl chars: ^@ .. ^_, ^?
- *
- * Emacs-style: "M-" prefix
- *
- * Also,
- * "M-x" prefixed strings, append "\r" if needed
- * "\E]" prefixed strings (XTerm escape sequence) append ST if needed
- *
- * returns the converted string length
- */
- /* EXTPROTO */
- int
- rxvt_Str_escaped(char *str)
- {
- char ch, *s, *d;
- int i, num, append = 0;
- if (!str || !*str)
- return 0;
- d = s = str;
- if (*s == 'M' && s[1] == '-') {
- /* Emacs convenience, replace leading `M-..' with `\E..' */
- *d++ = C0_ESC;
- s += 2;
- if (toupper(*s) == 'X')
- /* append carriage-return for `M-xcommand' */
- for (*d++ = 'x', append = '\r', s++; isspace(*s); s++) ;
- }
- for (; (ch = *s++);) {
- if (ch == '\\') {
- ch = *s++;
- if (ch >= '0' && ch <= '7') { /* octal */
- num = ch - '0';
- for (i = 0; i < 2; i++, s++) {
- ch = *s;
- if (ch < '0' || ch > '7')
- break;
- num = num * 8 + ch - '0';
- }
- ch = (char)num;
- } else if (ch == 'a')
- ch = C0_BEL; /* bell */
- else if (ch == 'b')
- ch = C0_BS; /* backspace */
- else if (ch == 'E' || ch == 'e')
- ch = C0_ESC; /* escape */
- else if (ch == 'n')
- ch = '\n'; /* newline */
- else if (ch == 'r')
- ch = '\r'; /* carriage-return */
- else if (ch == 't')
- ch = C0_HT; /* tab */
- } else if (ch == '^') {
- ch = *s++;
- ch = toupper(ch);
- ch = (ch == '?' ? 127 : (ch - '@'));
- }
- *d++ = ch;
- }
- /* ESC] is an XTerm escape sequence, must be terminated */
- if (*str == '\0' && str[1] == C0_ESC && str[2] == ']')
- append = CHAR_ST;
- /* add trailing character as required */
- if (append && d[-1] != append)
- *d++ = append;
- *d = '\0';
- return (d - str);
- }
- /*----------------------------------------------------------------------*
- * file searching
- */
- /* #define DEBUG_SEARCH_PATH */
- #if defined (XPM_BACKGROUND) || (MENUBAR_MAX)
- /*
- * search for FILE in the current working directory, and within the
- * colon-delimited PATHLIST, adding the file extension EXT if required.
- *
- * FILE is either semi-colon or zero terminated
- */
- /* INTPROTO */
- char *
- rxvt_File_search_path(const char *pathlist, const char *file, const char *ext)
- {
- int maxpath, len;
- const char *p, *path;
- char name[256];
- if (!access(file, R_OK)) /* found (plain name) in current directory */
- return STRDUP(file);
- /* semi-colon delimited */
- if ((p = STRCHR(file, ';')))
- len = (p - file);
- else
- len = STRLEN(file);
- #ifdef DEBUG_SEARCH_PATH
- getcwd(name, sizeof(name));
- fprintf(stderr, "pwd: \"%s\"\n", name);
- fprintf(stderr, "find: \"%.*s\"\n", len, file);
- #endif
- /* leave room for an extra '/' and trailing '\0' */
- maxpath = sizeof(name) - (len + (ext ? STRLEN(ext) : 0) + 2);
- if (maxpath <= 0)
- return NULL;
- /* check if we can find it now */
- STRNCPY(name, file, len);
- name[len] = '\0';
- if (!access(name, R_OK))
- return STRDUP(name);
- if (ext) {
- STRCAT(name, ext);
- if (!access(name, R_OK))
- return STRDUP(name);
- }
- for (path = pathlist; path != NULL && *path != '\0'; path = p) {
- int n;
- /* colon delimited */
- if ((p = STRCHR(path, ':')) == NULL)
- p = STRCHR(path, '\0');
- n = (p - path);
- if (*p != '\0')
- p++;
- if (n > 0 && n <= maxpath) {
- STRNCPY(name, path, n);
- if (name[n - 1] != '/')
- name[n++] = '/';
- name[n] = '\0';
- STRNCAT(name, file, len);
- if (!access(name, R_OK))
- return STRDUP(name);
- if (ext) {
- STRCAT(name, ext);
- if (!access(name, R_OK))
- return STRDUP(name);
- }
- }
- }
- return NULL;
- }
- /* EXTPROTO */
- char *
- rxvt_File_find(const char *file, const char *ext, const char *path)
- {
- char *f;
- if (file == NULL || *file == '\0')
- return NULL;
- /* search environment variables here too */
- if ((f = rxvt_File_search_path(path, file, ext)) == NULL)
- #ifdef PATH_ENV
- if ((f = rxvt_File_search_path(getenv(PATH_ENV), file, ext)) == NULL)
- #endif
- f = rxvt_File_search_path(getenv("PATH"), file, ext);
- #ifdef DEBUG_SEARCH_PATH
- if (f)
- fprintf(stderr, "found: \"%s\"\n", f);
- #endif
- return f;
- }
- #endif /* defined (XPM_BACKGROUND) || (MENUBAR_MAX) */
- /*----------------------------------------------------------------------*
- * miscellaneous drawing routines
- */
- /*
- * Draw top/left and bottom/right border shadows around windows
- */
- #if defined(RXVT_SCROLLBAR) || defined(MENUBAR)
- /* EXTPROTO */
- void
- rxvt_Draw_Shadow(Display *Xdisplay, Window win, GC topShadow, GC botShadow, int x, int y, int w, int h)
- {
- int shadow;
- shadow = (w == 0 || h == 0) ? 1 : SHADOW;
- w += x - 1;
- h += y - 1;
- for (; shadow-- > 0; x++, y++, w--, h--) {
- XDrawLine(Xdisplay, win, topShadow, x, y, w, y);
- XDrawLine(Xdisplay, win, topShadow, x, y, x, h);
- XDrawLine(Xdisplay, win, botShadow, w, h, w, y + 1);
- XDrawLine(Xdisplay, win, botShadow, w, h, x + 1, h);
- }
- }
- #endif
- /* button shapes */
- #ifdef MENUBAR
- /* EXTPROTO */
- void
- rxvt_Draw_Triangle(Display *Xdisplay, Window win, GC topShadow, GC botShadow, int x, int y, int w, int type)
- {
- switch (type) {
- case 'r': /* right triangle */
- XDrawLine(Xdisplay, win, topShadow, x, y, x, y + w);
- XDrawLine(Xdisplay, win, topShadow, x, y, x + w, y + w / 2);
- XDrawLine(Xdisplay, win, botShadow, x, y + w, x + w, y + w / 2);
- break;
- case 'l': /* left triangle */
- XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x + w, y);
- XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x, y + w / 2);
- XDrawLine(Xdisplay, win, topShadow, x, y + w / 2, x + w, y);
- break;
- case 'd': /* down triangle */
- XDrawLine(Xdisplay, win, topShadow, x, y, x + w / 2, y + w);
- XDrawLine(Xdisplay, win, topShadow, x, y, x + w, y);
- XDrawLine(Xdisplay, win, botShadow, x + w, y, x + w / 2, y + w);
- break;
- case 'u': /* up triangle */
- XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x + w / 2, y);
- XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x, y + w);
- XDrawLine(Xdisplay, win, topShadow, x, y + w, x + w / 2, y);
- break;
- #if 0
- case 's': /* square */
- XDrawLine(Xdisplay, win, topShadow, x + w, y, x, y);
- XDrawLine(Xdisplay, win, topShadow, x, y, x, y + w);
- XDrawLine(Xdisplay, win, botShadow, x, y + w, x + w, y + w);
- XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x + w, y);
- break;
- #endif
- }
- }
- #endif
- /*----------------------- end-of-file (C source) -----------------------*/