1 /*--------------------------------*-C-*---------------------------------*
2 * File: misc.c
3 *----------------------------------------------------------------------*
4 * $Id: misc.c,v 1.39 2001/10/10 07:17:49 gcw Exp $
5 *
6 * All portions of code are copyright by their respective author/s.
7 * Copyright (c) 1996 mj olesen <olesen@me.QueensU.CA> Queen's Univ at Kingston
8 * Copyright (c) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de>
9 * Copyright (c) 1998-2000 Geoff Wing <gcw@pobox.com>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 *----------------------------------------------------------------------*/
25
26 #include "../config.h" /* NECESSARY */
27 #include "rxvt.h" /* NECESSARY */
28 #include "misc.intpro" /* PROTOS for internal routines */
29
30 /* EXTPROTO */
31 char *
rxvt_r_basename(const char * str)32 rxvt_r_basename(const char *str)
33 {
34 char *base = STRRCHR(str, '/');
35
36 return (char *)(base ? base + 1 : str);
37 }
38
39 /*
40 * Print an error message
41 */
42 /* EXTPROTO */
43 void
rxvt_print_error(const char * fmt,...)44 rxvt_print_error(const char *fmt,...)
45 {
46 va_list arg_ptr;
47
48 va_start(arg_ptr, fmt);
49 fprintf(stderr, APL_NAME ": ");
50 vfprintf(stderr, fmt, arg_ptr);
51 fprintf(stderr, "\n");
52 va_end(arg_ptr);
53 }
54
55 /*
56 * check that the first characters of S1 match S2
57 *
58 * No Match
59 * return: 0
60 * Match
61 * return: STRLEN (S2)
62 */
63 /* EXTPROTO */
64 int
rxvt_Str_match(const char * s1,const char * s2)65 rxvt_Str_match(const char *s1, const char *s2)
66 {
67 int n = STRLEN(s2);
68
69 return ((STRNCMP(s1, s2, n) == 0) ? n : 0);
70 }
71
72 /* EXTPROTO */
73 const char *
rxvt_Str_skip_space(const char * str)74 rxvt_Str_skip_space(const char *str)
75 {
76 if (str)
77 while (*str && isspace(*str))
78 str++;
79 return str;
80 }
81
82 /*
83 * remove leading/trailing space and strip-off leading/trailing quotes.
84 * in place.
85 */
86 /* EXTPROTO */
87 char *
rxvt_Str_trim(char * str)88 rxvt_Str_trim(char *str)
89 {
90 char *r, *s;
91 int n;
92
93 if (!str || !*str) /* shortcut */
94 return str;
95
96 /* skip leading spaces */
97 for (s = str; *s && isspace(*s); s++) ;
98 /* goto end of string */
99 for (n = 0, r = s; *r++; n++) ;
100 r -= 2;
101 /* dump return */
102 if (n > 0 && *r == '\n')
103 n--, r--;
104 /* backtrack along trailing spaces */
105 for (; n > 0 && isspace(*r); r--, n--) ;
106 /* skip matching leading/trailing quotes */
107 if (*s == '"' && *r == '"' && n > 1) {
108 s++;
109 n -= 2;
110 }
111 /* copy back over: forwards copy */
112 for (r = str; n; n--)
113 *r++ = *s++;
114 *r = '\0';
115
116 return str;
117 }
118
119 /*
120 * in-place interpretation of string:
121 *
122 * backslash-escaped: "\a\b\E\e\n\r\t", "\octal"
123 * Ctrl chars: ^@ .. ^_, ^?
124 *
125 * Emacs-style: "M-" prefix
126 *
127 * Also,
128 * "M-x" prefixed strings, append "\r" if needed
129 * "\E]" prefixed strings (XTerm escape sequence) append ST if needed
130 *
131 * returns the converted string length
132 */
133 /* EXTPROTO */
134 int
rxvt_Str_escaped(char * str)135 rxvt_Str_escaped(char *str)
136 {
137 char ch, *s, *d;
138 int i, num, append = 0;
139
140 if (!str || !*str)
141 return 0;
142
143 d = s = str;
144
145 if (*s == 'M' && s[1] == '-') {
146 /* Emacs convenience, replace leading `M-..' with `\E..' */
147 *d++ = C0_ESC;
148 s += 2;
149 if (toupper(*s) == 'X')
150 /* append carriage-return for `M-xcommand' */
151 for (*d++ = 'x', append = '\r', s++; isspace(*s); s++) ;
152 }
153 for (; (ch = *s++);) {
154 if (ch == '\\') {
155 ch = *s++;
156 if (ch >= '0' && ch <= '7') { /* octal */
157 num = ch - '0';
158 for (i = 0; i < 2; i++, s++) {
159 ch = *s;
160 if (ch < '0' || ch > '7')
161 break;
162 num = num * 8 + ch - '0';
163 }
164 ch = (char)num;
165 } else if (ch == 'a')
166 ch = C0_BEL; /* bell */
167 else if (ch == 'b')
168 ch = C0_BS; /* backspace */
169 else if (ch == 'E' || ch == 'e')
170 ch = C0_ESC; /* escape */
171 else if (ch == 'n')
172 ch = '\n'; /* newline */
173 else if (ch == 'r')
174 ch = '\r'; /* carriage-return */
175 else if (ch == 't')
176 ch = C0_HT; /* tab */
177 } else if (ch == '^') {
178 ch = *s++;
179 ch = toupper(ch);
180 ch = (ch == '?' ? 127 : (ch - '@'));
181 }
182 *d++ = ch;
183 }
184
185 /* ESC] is an XTerm escape sequence, must be terminated */
186 if (*str == '\0' && str[1] == C0_ESC && str[2] == ']')
187 append = CHAR_ST;
188
189 /* add trailing character as required */
190 if (append && d[-1] != append)
191 *d++ = append;
192 *d = '\0';
193
194 return (d - str);
195 }
196
197 /*
198 * Split a comma-separated string into an array, stripping leading and
199 * trailing spaces (and paired quotes) from each entry. Empty strings
200 * are properly returned
201 * Caller should free each entry and array when done
202 */
203 /* EXTPROTO */
204 char **
rxvt_splitcommastring(const char * cs)205 rxvt_splitcommastring(const char *cs)
206 {
207 int l, n, p;
208 const char *s, *t;
209 char **ret;
210
211 if ((s = cs) == NULL)
212 s = "";
213
214 for (n = 1, t = s; *t; t++)
215 if (*t == ',')
216 n++;
217 ret = malloc((n + 1) * sizeof(char *));
218 ret[n] = NULL;
219
220 for (l = 0, t = s; l < n; l++) {
221 for ( ; *t && *t != ','; t++) ;
222 p = t - s;
223 ret[l] = malloc(p + 1);
224 strncpy(ret[l], s, p);
225 ret[l][p] = '\0';
226 rxvt_Str_trim(ret[l]);
227 s = ++t;
228 }
229 return ret;
230 }
231
232 /*----------------------------------------------------------------------*
233 * file searching
234 */
235
236 /* #define DEBUG_SEARCH_PATH */
237
238 #if defined (XPM_BACKGROUND) || (MENUBAR_MAX)
239 /*
240 * search for FILE in the current working directory, and within the
241 * colon-delimited PATHLIST, adding the file extension EXT if required.
242 *
243 * FILE is either semi-colon or zero terminated
244 */
245 /* INTPROTO */
246 char *
rxvt_File_search_path(const char * pathlist,const char * file,const char * ext)247 rxvt_File_search_path(const char *pathlist, const char *file, const char *ext)
248 {
249 int maxpath, len;
250 const char *p, *path;
251 char name[256];
252
253 if (!access(file, R_OK)) /* found (plain name) in current directory */
254 return STRDUP(file);
255
256 /* semi-colon delimited */
257 if ((p = STRCHR(file, ';')))
258 len = (p - file);
259 else
260 len = STRLEN(file);
261
262 #ifdef DEBUG_SEARCH_PATH
263 getcwd(name, sizeof(name));
264 fprintf(stderr, "pwd: \"%s\"\n", name);
265 fprintf(stderr, "find: \"%.*s\"\n", len, file);
266 #endif
267
268 /* leave room for an extra '/' and trailing '\0' */
269 maxpath = sizeof(name) - (len + (ext ? STRLEN(ext) : 0) + 2);
270 if (maxpath <= 0)
271 return NULL;
272
273 /* check if we can find it now */
274 STRNCPY(name, file, len);
275 name[len] = '\0';
276
277 if (!access(name, R_OK))
278 return STRDUP(name);
279 if (ext) {
280 STRCAT(name, ext);
281 if (!access(name, R_OK))
282 return STRDUP(name);
283 }
284 for (path = pathlist; path != NULL && *path != '\0'; path = p) {
285 int n;
286
287 /* colon delimited */
288 if ((p = STRCHR(path, ':')) == NULL)
289 p = STRCHR(path, '\0');
290
291 n = (p - path);
292 if (*p != '\0')
293 p++;
294
295 if (n > 0 && n <= maxpath) {
296 STRNCPY(name, path, n);
297 if (name[n - 1] != '/')
298 name[n++] = '/';
299 name[n] = '\0';
300 STRNCAT(name, file, len);
301
302 if (!access(name, R_OK))
303 return STRDUP(name);
304 if (ext) {
305 STRCAT(name, ext);
306 if (!access(name, R_OK))
307 return STRDUP(name);
308 }
309 }
310 }
311 return NULL;
312 }
313
314 /* EXTPROTO */
315 char *
rxvt_File_find(const char * file,const char * ext,const char * path)316 rxvt_File_find(const char *file, const char *ext, const char *path)
317 {
318 char *f;
319
320 if (file == NULL || *file == '\0')
321 return NULL;
322
323 /* search environment variables here too */
324 if ((f = rxvt_File_search_path(path, file, ext)) == NULL)
325 #ifdef PATH_ENV
326 if ((f = rxvt_File_search_path(getenv(PATH_ENV), file, ext)) == NULL)
327 #endif
328 f = rxvt_File_search_path(getenv("PATH"), file, ext);
329
330 #ifdef DEBUG_SEARCH_PATH
331 if (f)
332 fprintf(stderr, "found: \"%s\"\n", f);
333 #endif
334
335 return f;
336 }
337 #endif /* defined (XPM_BACKGROUND) || (MENUBAR_MAX) */
338
339 /*----------------------------------------------------------------------*
340 * miscellaneous drawing routines
341 */
342
343 /*
344 * Draw top/left and bottom/right border shadows around windows
345 */
346 #if defined(RXVT_SCROLLBAR) || defined(MENUBAR)
347 /* EXTPROTO */
348 void
rxvt_Draw_Shadow(Display * Xdisplay,Window win,GC topShadow,GC botShadow,int x,int y,int w,int h)349 rxvt_Draw_Shadow(Display *Xdisplay, Window win, GC topShadow, GC botShadow, int x, int y, int w, int h)
350 {
351 int shadow;
352
353 shadow = (w == 0 || h == 0) ? 1 : SHADOW;
354 w += x - 1;
355 h += y - 1;
356 for (; shadow-- > 0; x++, y++, w--, h--) {
357 XDrawLine(Xdisplay, win, topShadow, x, y, w, y);
358 XDrawLine(Xdisplay, win, topShadow, x, y, x, h);
359 XDrawLine(Xdisplay, win, botShadow, w, h, w, y + 1);
360 XDrawLine(Xdisplay, win, botShadow, w, h, x + 1, h);
361 }
362 }
363 #endif
364
365 /* button shapes */
366 #ifdef MENUBAR
367 /* EXTPROTO */
368 void
rxvt_Draw_Triangle(Display * Xdisplay,Window win,GC topShadow,GC botShadow,int x,int y,int w,int type)369 rxvt_Draw_Triangle(Display *Xdisplay, Window win, GC topShadow, GC botShadow, int x, int y, int w, int type)
370 {
371 switch (type) {
372 case 'r': /* right triangle */
373 XDrawLine(Xdisplay, win, topShadow, x, y, x, y + w);
374 XDrawLine(Xdisplay, win, topShadow, x, y, x + w, y + w / 2);
375 XDrawLine(Xdisplay, win, botShadow, x, y + w, x + w, y + w / 2);
376 break;
377
378 case 'l': /* left triangle */
379 XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x + w, y);
380 XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x, y + w / 2);
381 XDrawLine(Xdisplay, win, topShadow, x, y + w / 2, x + w, y);
382 break;
383
384 case 'd': /* down triangle */
385 XDrawLine(Xdisplay, win, topShadow, x, y, x + w / 2, y + w);
386 XDrawLine(Xdisplay, win, topShadow, x, y, x + w, y);
387 XDrawLine(Xdisplay, win, botShadow, x + w, y, x + w / 2, y + w);
388 break;
389
390 case 'u': /* up triangle */
391 XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x + w / 2, y);
392 XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x, y + w);
393 XDrawLine(Xdisplay, win, topShadow, x, y + w, x + w / 2, y);
394 break;
395 #if 0
396 case 's': /* square */
397 XDrawLine(Xdisplay, win, topShadow, x + w, y, x, y);
398 XDrawLine(Xdisplay, win, topShadow, x, y, x, y + w);
399 XDrawLine(Xdisplay, win, botShadow, x, y + w, x + w, y + w);
400 XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x + w, y);
401 break;
402 #endif
403 }
404 }
405 #endif
406 /*----------------------- end-of-file (C source) -----------------------*/
407