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/cvs/rxvt-unicode/src/misc.C
Revision: 1.3
Committed: Sat Jan 31 00:20:21 2004 UTC (20 years, 4 months ago) by pcg
Content type: text/plain
Branch: MAIN
Changes since 1.2: +8 -1 lines
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File Contents

# Content
1 /*--------------------------------*-C-*---------------------------------*
2 * File: misc.c
3 *----------------------------------------------------------------------*
4 * $Id: misc.C,v 1.2 2003/11/24 17:31:27 pcg 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 *
32 rxvt_strdup (const char *str)
33 {
34 return str ? strdup (str) : 0;
35 }
36
37 /* EXTPROTO */
38 char *
39 rxvt_r_basename(const char *str)
40 {
41 char *base = STRRCHR(str, '/');
42
43 return (char *)(base ? base + 1 : str);
44 }
45
46 /*
47 * Print an error message
48 */
49 /* EXTPROTO */
50 void
51 rxvt_print_error(const char *fmt,...)
52 {
53 va_list arg_ptr;
54
55 va_start(arg_ptr, fmt);
56 fprintf(stderr, APL_NAME ": ");
57 vfprintf(stderr, fmt, arg_ptr);
58 fprintf(stderr, "\n");
59 va_end(arg_ptr);
60 }
61
62 /*
63 * check that the first characters of S1 match S2
64 *
65 * No Match
66 * return: 0
67 * Match
68 * return: STRLEN (S2)
69 */
70 /* EXTPROTO */
71 int
72 rxvt_Str_match(const char *s1, const char *s2)
73 {
74 int n = STRLEN(s2);
75
76 return ((STRNCMP(s1, s2, n) == 0) ? n : 0);
77 }
78
79 /* EXTPROTO */
80 const char *
81 rxvt_Str_skip_space(const char *str)
82 {
83 if (str)
84 while (*str && isspace(*str))
85 str++;
86 return str;
87 }
88
89 /*
90 * remove leading/trailing space and strip-off leading/trailing quotes.
91 * in place.
92 */
93 /* EXTPROTO */
94 char *
95 rxvt_Str_trim(char *str)
96 {
97 char *r, *s;
98 int n;
99
100 if (!str || !*str) /* shortcut */
101 return str;
102
103 /* skip leading spaces */
104 for (s = str; *s && isspace(*s); s++) ;
105 /* goto end of string */
106 for (n = 0, r = s; *r++; n++) ;
107 r -= 2;
108 /* dump return */
109 if (n > 0 && *r == '\n')
110 n--, r--;
111 /* backtrack along trailing spaces */
112 for (; n > 0 && isspace(*r); r--, n--) ;
113 /* skip matching leading/trailing quotes */
114 if (*s == '"' && *r == '"' && n > 1) {
115 s++;
116 n -= 2;
117 }
118 /* copy back over: forwards copy */
119 for (r = str; n; n--)
120 *r++ = *s++;
121 *r = '\0';
122
123 return str;
124 }
125
126 /*
127 * in-place interpretation of string:
128 *
129 * backslash-escaped: "\a\b\E\e\n\r\t", "\octal"
130 * Ctrl chars: ^@ .. ^_, ^?
131 *
132 * Emacs-style: "M-" prefix
133 *
134 * Also,
135 * "M-x" prefixed strings, append "\r" if needed
136 * "\E]" prefixed strings (XTerm escape sequence) append ST if needed
137 *
138 * returns the converted string length
139 */
140 /* EXTPROTO */
141 int
142 rxvt_Str_escaped(char *str)
143 {
144 char ch, *s, *d;
145 int i, num, append = 0;
146
147 if (!str || !*str)
148 return 0;
149
150 d = s = str;
151
152 if (*s == 'M' && s[1] == '-') {
153 /* Emacs convenience, replace leading `M-..' with `\E..' */
154 *d++ = C0_ESC;
155 s += 2;
156 if (toupper(*s) == 'X')
157 /* append carriage-return for `M-xcommand' */
158 for (*d++ = 'x', append = '\r', s++; isspace(*s); s++) ;
159 }
160 for (; (ch = *s++);) {
161 if (ch == '\\') {
162 ch = *s++;
163 if (ch >= '0' && ch <= '7') { /* octal */
164 num = ch - '0';
165 for (i = 0; i < 2; i++, s++) {
166 ch = *s;
167 if (ch < '0' || ch > '7')
168 break;
169 num = num * 8 + ch - '0';
170 }
171 ch = (char)num;
172 } else if (ch == 'a')
173 ch = C0_BEL; /* bell */
174 else if (ch == 'b')
175 ch = C0_BS; /* backspace */
176 else if (ch == 'E' || ch == 'e')
177 ch = C0_ESC; /* escape */
178 else if (ch == 'n')
179 ch = '\n'; /* newline */
180 else if (ch == 'r')
181 ch = '\r'; /* carriage-return */
182 else if (ch == 't')
183 ch = C0_HT; /* tab */
184 } else if (ch == '^') {
185 ch = *s++;
186 ch = toupper(ch);
187 ch = (ch == '?' ? 127 : (ch - '@'));
188 }
189 *d++ = ch;
190 }
191
192 /* ESC] is an XTerm escape sequence, must be terminated */
193 if (*str == '\0' && str[1] == C0_ESC && str[2] == ']')
194 append = CHAR_ST;
195
196 /* add trailing character as required */
197 if (append && d[-1] != append)
198 *d++ = append;
199 *d = '\0';
200
201 return (d - str);
202 }
203
204 /*
205 * Split a comma-separated string into an array, stripping leading and
206 * trailing spaces (and paired quotes) from each entry. Empty strings
207 * are properly returned
208 * Caller should free each entry and array when done
209 */
210 /* EXTPROTO */
211 char **
212 rxvt_splitcommastring(const char *cs)
213 {
214 int l, n, p;
215 const char *s, *t;
216 char **ret;
217
218 if ((s = cs) == NULL)
219 s = "";
220
221 for (n = 1, t = s; *t; t++)
222 if (*t == ',')
223 n++;
224 ret = (char **)malloc((n + 1) * sizeof(char *));
225 ret[n] = NULL;
226
227 for (l = 0, t = s; l < n; l++) {
228 for ( ; *t && *t != ','; t++) ;
229 p = t - s;
230 ret[l] = (char *)malloc(p + 1);
231 strncpy(ret[l], s, p);
232 ret[l][p] = '\0';
233 rxvt_Str_trim(ret[l]);
234 s = ++t;
235 }
236 return ret;
237 }
238
239 /*----------------------------------------------------------------------*
240 * file searching
241 */
242
243 /* #define DEBUG_SEARCH_PATH */
244
245 #if defined (XPM_BACKGROUND) || (MENUBAR_MAX)
246 /*
247 * search for FILE in the current working directory, and within the
248 * colon-delimited PATHLIST, adding the file extension EXT if required.
249 *
250 * FILE is either semi-colon or zero terminated
251 */
252 /* INTPROTO */
253 char *
254 rxvt_File_search_path(const char *pathlist, const char *file, const char *ext)
255 {
256 int maxpath, len;
257 const char *p, *path;
258 char name[256];
259
260 if (!access(file, R_OK)) /* found (plain name) in current directory */
261 return STRDUP(file);
262
263 /* semi-colon delimited */
264 if ((p = STRCHR(file, ';')))
265 len = (p - file);
266 else
267 len = STRLEN(file);
268
269 #ifdef DEBUG_SEARCH_PATH
270 getcwd(name, sizeof(name));
271 fprintf(stderr, "pwd: \"%s\"\n", name);
272 fprintf(stderr, "find: \"%.*s\"\n", len, file);
273 #endif
274
275 /* leave room for an extra '/' and trailing '\0' */
276 maxpath = sizeof(name) - (len + (ext ? STRLEN(ext) : 0) + 2);
277 if (maxpath <= 0)
278 return NULL;
279
280 /* check if we can find it now */
281 STRNCPY(name, file, len);
282 name[len] = '\0';
283
284 if (!access(name, R_OK))
285 return STRDUP(name);
286 if (ext) {
287 STRCAT(name, ext);
288 if (!access(name, R_OK))
289 return STRDUP(name);
290 }
291 for (path = pathlist; path != NULL && *path != '\0'; path = p) {
292 int n;
293
294 /* colon delimited */
295 if ((p = STRCHR(path, ':')) == NULL)
296 p = STRCHR(path, '\0');
297
298 n = (p - path);
299 if (*p != '\0')
300 p++;
301
302 if (n > 0 && n <= maxpath) {
303 STRNCPY(name, path, n);
304 if (name[n - 1] != '/')
305 name[n++] = '/';
306 name[n] = '\0';
307 STRNCAT(name, file, len);
308
309 if (!access(name, R_OK))
310 return STRDUP(name);
311 if (ext) {
312 STRCAT(name, ext);
313 if (!access(name, R_OK))
314 return STRDUP(name);
315 }
316 }
317 }
318 return NULL;
319 }
320
321 /* EXTPROTO */
322 char *
323 rxvt_File_find(const char *file, const char *ext, const char *path)
324 {
325 char *f;
326
327 if (file == NULL || *file == '\0')
328 return NULL;
329
330 /* search environment variables here too */
331 if ((f = rxvt_File_search_path(path, file, ext)) == NULL)
332 #ifdef PATH_ENV
333 if ((f = rxvt_File_search_path(getenv(PATH_ENV), file, ext)) == NULL)
334 #endif
335 f = rxvt_File_search_path(getenv("PATH"), file, ext);
336
337 #ifdef DEBUG_SEARCH_PATH
338 if (f)
339 fprintf(stderr, "found: \"%s\"\n", f);
340 #endif
341
342 return f;
343 }
344 #endif /* defined (XPM_BACKGROUND) || (MENUBAR_MAX) */
345
346 /*----------------------------------------------------------------------*
347 * miscellaneous drawing routines
348 */
349
350 /*
351 * Draw top/left and bottom/right border shadows around windows
352 */
353 #if defined(RXVT_SCROLLBAR) || defined(MENUBAR)
354 /* EXTPROTO */
355 void
356 rxvt_Draw_Shadow(Display *Xdisplay, Window win, GC topShadow, GC botShadow, int x, int y, int w, int h)
357 {
358 int shadow;
359
360 shadow = (w == 0 || h == 0) ? 1 : SHADOW;
361 w += x - 1;
362 h += y - 1;
363 for (; shadow-- > 0; x++, y++, w--, h--) {
364 XDrawLine(Xdisplay, win, topShadow, x, y, w, y);
365 XDrawLine(Xdisplay, win, topShadow, x, y, x, h);
366 XDrawLine(Xdisplay, win, botShadow, w, h, w, y + 1);
367 XDrawLine(Xdisplay, win, botShadow, w, h, x + 1, h);
368 }
369 }
370 #endif
371
372 /* button shapes */
373 #ifdef MENUBAR
374 /* EXTPROTO */
375 void
376 rxvt_Draw_Triangle(Display *Xdisplay, Window win, GC topShadow, GC botShadow, int x, int y, int w, int type)
377 {
378 switch (type) {
379 case 'r': /* right triangle */
380 XDrawLine(Xdisplay, win, topShadow, x, y, x, y + w);
381 XDrawLine(Xdisplay, win, topShadow, x, y, x + w, y + w / 2);
382 XDrawLine(Xdisplay, win, botShadow, x, y + w, x + w, y + w / 2);
383 break;
384
385 case 'l': /* left triangle */
386 XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x + w, y);
387 XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x, y + w / 2);
388 XDrawLine(Xdisplay, win, topShadow, x, y + w / 2, x + w, y);
389 break;
390
391 case 'd': /* down triangle */
392 XDrawLine(Xdisplay, win, topShadow, x, y, x + w / 2, y + w);
393 XDrawLine(Xdisplay, win, topShadow, x, y, x + w, y);
394 XDrawLine(Xdisplay, win, botShadow, x + w, y, x + w / 2, y + w);
395 break;
396
397 case 'u': /* up triangle */
398 XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x + w / 2, y);
399 XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x, y + w);
400 XDrawLine(Xdisplay, win, topShadow, x, y + w, x + w / 2, y);
401 break;
402 #if 0
403 case 's': /* square */
404 XDrawLine(Xdisplay, win, topShadow, x + w, y, x, y);
405 XDrawLine(Xdisplay, win, topShadow, x, y, x, y + w);
406 XDrawLine(Xdisplay, win, botShadow, x, y + w, x + w, y + w);
407 XDrawLine(Xdisplay, win, botShadow, x + w, y + w, x + w, y);
408 break;
409 #endif
410 }
411 }
412 #endif
413 /*----------------------- end-of-file (C source) -----------------------*/