1 | /*--------------------------------*-C-*---------------------------------* |
1 | /*----------------------------------------------------------------------* |
2 | * File: misc.C |
2 | * File: misc.C |
3 | *----------------------------------------------------------------------* |
3 | *----------------------------------------------------------------------* |
4 | * |
4 | * |
5 | * All portions of code are copyright by their respective author/s. |
5 | * All portions of code are copyright by their respective author/s. |
6 | * Copyright (c) 1996 mj olesen <olesen@me.QueensU.CA> Queen's Univ at Kingston |
6 | * Copyright (c) 1996 mj olesen <olesen@me.QueensU.CA> Queen's Univ at Kingston |
7 | * Copyright (c) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de> |
7 | * Copyright (c) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de> |
8 | * Copyright (c) 1998-2000 Geoff Wing <gcw@pobox.com> |
8 | * Copyright (c) 1998-2000 Geoff Wing <gcw@pobox.com> |
9 | * Copyright (c) 2003-2004 Marc Lehmann <pcg@goof.com> |
9 | * Copyright (c) 2003-2006 Marc Lehmann <pcg@goof.com> |
10 | * |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify |
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 |
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 |
13 | * the Free Software Foundation; either version 2 of the License, or |
14 | * (at your option) any later version. |
14 | * (at your option) any later version. |
… | |
… | |
79 | *p++ = w; |
79 | *p++ = w; |
80 | else if (w < 0x000800) |
80 | else if (w < 0x000800) |
81 | *p++ = 0xc0 | ( w >> 6), |
81 | *p++ = 0xc0 | ( w >> 6), |
82 | *p++ = 0x80 | ( w & 0x3f); |
82 | *p++ = 0x80 | ( w & 0x3f); |
83 | else if (w < 0x010000) |
83 | else if (w < 0x010000) |
84 | *p++ = 0xe0 | ( w >> 12 ), |
84 | *p++ = 0xe0 | ( w >> 12), |
85 | *p++ = 0x80 | ((w >> 6) & 0x3f), |
85 | *p++ = 0x80 | ((w >> 6) & 0x3f), |
86 | *p++ = 0x80 | ( w & 0x3f); |
86 | *p++ = 0x80 | ( w & 0x3f); |
87 | else if (w < 0x110000) |
87 | else if (w < 0x110000) |
88 | *p++ = 0xf0 | ( w >> 18), |
88 | *p++ = 0xf0 | ( w >> 18), |
89 | *p++ = 0x80 | ((w >> 12) & 0x3f), |
89 | *p++ = 0x80 | ((w >> 12) & 0x3f), |
… | |
… | |
116 | if (len == 0) |
116 | if (len == 0) |
117 | break; |
117 | break; |
118 | else if (s[0] < 0x80) |
118 | else if (s[0] < 0x80) |
119 | *p++ = *s++; |
119 | *p++ = *s++; |
120 | else if (len >= 2 |
120 | else if (len >= 2 |
121 | && s[0] >= 0xc2 && s[0] <= 0xdf |
121 | && s[0] >= 0xc2 && s[0] <= 0xdf |
122 | && (s[1] & 0xc0) == 0x80) |
122 | && (s[1] & 0xc0) == 0x80) |
123 | { |
123 | { |
124 | *p++ = ((s[0] & 0x1f) << 6) |
124 | *p++ = ((s[0] & 0x1f) << 6) |
125 | | (s[1] & 0x3f); |
125 | | (s[1] & 0x3f); |
126 | s += 2; |
126 | s += 2; |
… | |
… | |
144 | || (s[0] == 0xf4 && s[1] >= 0x80 && s[1] <= 0x8f) |
144 | || (s[0] == 0xf4 && s[1] >= 0x80 && s[1] <= 0x8f) |
145 | ) |
145 | ) |
146 | && (s[2] & 0xc0) == 0x80 |
146 | && (s[2] & 0xc0) == 0x80 |
147 | && (s[3] & 0xc0) == 0x80) |
147 | && (s[3] & 0xc0) == 0x80) |
148 | { |
148 | { |
149 | *p++ = ((s[0] & 0x07) << 18) |
149 | *p++ = ((s[0] & 0x07) << 18) |
150 | | ((s[1] & 0x3f) << 12) |
150 | | ((s[1] & 0x3f) << 12) |
151 | | ((s[2] & 0x3f) << 6) |
151 | | ((s[2] & 0x3f) << 6) |
152 | | (s[3] & 0x3f); |
152 | | (s[3] & 0x3f); |
153 | s += 4; |
153 | s += 4; |
154 | } |
154 | } |
155 | else |
155 | else |
156 | { |
156 | { |
… | |
… | |
163 | |
163 | |
164 | return r; |
164 | return r; |
165 | } |
165 | } |
166 | |
166 | |
167 | char * |
167 | char * |
168 | rxvt_strdup (const char *str) |
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169 | { |
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170 | return str ? strdup (str) : 0; |
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171 | } |
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172 | |
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173 | char * |
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174 | rxvt_r_basename (const char *str) |
168 | rxvt_basename (const char *str) NOTHROW |
175 | { |
169 | { |
176 | char *base = strrchr (str, '/'); |
170 | char *base = strrchr (str, '/'); |
177 | |
171 | |
178 | return (char *) (base ? base + 1 : str); |
172 | return (char *) (base ? base + 1 : str); |
179 | } |
173 | } |
180 | |
174 | |
181 | /* |
175 | /* |
182 | * Print an error message |
176 | * Print an error message |
183 | */ |
177 | */ |
184 | void |
178 | void |
185 | rxvt_vlog (const char *fmt, va_list arg_ptr) |
179 | rxvt_vlog (const char *fmt, va_list arg_ptr) NOTHROW |
186 | { |
180 | { |
187 | char msg[1024]; |
181 | char msg[1024]; |
188 | |
182 | |
189 | vsnprintf (msg, sizeof msg, fmt, arg_ptr); |
183 | vsnprintf (msg, sizeof msg, fmt, arg_ptr); |
190 | |
184 | |
… | |
… | |
193 | else |
187 | else |
194 | write (STDOUT_FILENO, msg, strlen (msg)); |
188 | write (STDOUT_FILENO, msg, strlen (msg)); |
195 | } |
189 | } |
196 | |
190 | |
197 | void |
191 | void |
198 | rxvt_log (const char *fmt,...) |
192 | rxvt_log (const char *fmt,...) NOTHROW |
199 | { |
193 | { |
200 | va_list arg_ptr; |
194 | va_list arg_ptr; |
201 | |
195 | |
202 | va_start (arg_ptr, fmt); |
196 | va_start (arg_ptr, fmt); |
203 | rxvt_vlog (fmt, arg_ptr); |
197 | rxvt_vlog (fmt, arg_ptr); |
… | |
… | |
206 | |
200 | |
207 | /* |
201 | /* |
208 | * Print an error message |
202 | * Print an error message |
209 | */ |
203 | */ |
210 | void |
204 | void |
211 | rxvt_warn (const char *fmt,...) |
205 | rxvt_warn (const char *fmt,...) NOTHROW |
212 | { |
206 | { |
213 | va_list arg_ptr; |
207 | va_list arg_ptr; |
214 | |
208 | |
215 | rxvt_log ("%s: ", RESNAME); |
209 | rxvt_log ("%s: ", RESNAME); |
216 | |
210 | |
… | |
… | |
218 | rxvt_vlog (fmt, arg_ptr); |
212 | rxvt_vlog (fmt, arg_ptr); |
219 | va_end (arg_ptr); |
213 | va_end (arg_ptr); |
220 | } |
214 | } |
221 | |
215 | |
222 | void |
216 | void |
223 | rxvt_fatal (const char *fmt,...) |
217 | rxvt_fatal (const char *fmt,...) THROW ((class rxvt_failure_exception)) |
224 | { |
218 | { |
225 | va_list arg_ptr; |
219 | va_list arg_ptr; |
226 | |
220 | |
227 | rxvt_log ("%s: ", RESNAME); |
221 | rxvt_log ("%s: ", RESNAME); |
228 | |
222 | |
… | |
… | |
231 | va_end (arg_ptr); |
225 | va_end (arg_ptr); |
232 | |
226 | |
233 | rxvt_exit_failure (); |
227 | rxvt_exit_failure (); |
234 | } |
228 | } |
235 | |
229 | |
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230 | void |
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231 | rxvt_exit_failure () THROW ((class rxvt_failure_exception)) |
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232 | { |
236 | class rxvt_failure_exception rxvt_failure_exception; |
233 | static class rxvt_failure_exception rxvt_failure_exception; |
237 | |
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238 | void |
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239 | rxvt_exit_failure () |
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240 | { |
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241 | throw (rxvt_failure_exception); |
234 | throw (rxvt_failure_exception); |
242 | } |
235 | } |
243 | |
236 | |
244 | /* |
237 | /* |
245 | * check that the first characters of S1 match S2 |
238 | * remove leading/trailing space in place. |
246 | * |
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247 | * No Match |
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248 | * return: 0 |
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249 | * Match |
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250 | * return: strlen (S2) |
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251 | */ |
239 | */ |
252 | int |
240 | char * |
253 | rxvt_Str_match (const char *s1, const char *s2) |
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254 | { |
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255 | int n = strlen (s2); |
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256 | |
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257 | return ((strncmp (s1, s2, n) == 0) ? n : 0); |
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258 | } |
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259 | |
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260 | const char * |
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261 | rxvt_Str_skip_space (const char *str) |
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262 | { |
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263 | if (str) |
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264 | while (*str && isspace (*str)) |
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265 | str++; |
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266 | |
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267 | return str; |
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268 | } |
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269 | |
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270 | /* |
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271 | * remove leading/trailing space and strip-off leading/trailing quotes. |
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272 | * in place. |
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273 | */ |
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274 | char * |
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275 | rxvt_Str_trim (char *str) |
241 | rxvt_strtrim (char *str) NOTHROW |
276 | { |
242 | { |
277 | char *r, *s; |
243 | char *r, *s; |
278 | |
244 | |
279 | if (!str || !*str) /* shortcut */ |
245 | if (!str || !*str) /* shortcut */ |
280 | return str; |
246 | return str; |
… | |
… | |
287 | |
253 | |
288 | /* dump return and other trailing whitespace */ |
254 | /* dump return and other trailing whitespace */ |
289 | while (r > s && isspace (*r)) |
255 | while (r > s && isspace (*r)) |
290 | r--; |
256 | r--; |
291 | |
257 | |
292 | #if 0 |
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293 | /* skip matching leading/trailing quotes */ |
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294 | if (*s == '"' && *r == '"' && n > 1) |
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295 | { |
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296 | s++; |
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297 | n -= 2; |
|
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298 | } |
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299 | #endif |
|
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300 | |
|
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301 | memmove (str, s, r + 1 - s); |
258 | memmove (str, s, r + 1 - s); |
302 | str[r + 1 - s] = 0; |
259 | str[r + 1 - s] = 0; |
303 | |
260 | |
304 | return str; |
261 | return str; |
305 | } |
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306 | |
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307 | /* |
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308 | * in-place interpretation of string: |
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309 | * |
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310 | * backslash-escaped: "\a\b\E\e\n\r\t", "\octal" |
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311 | * Ctrl chars: ^@ .. ^_, ^? |
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312 | * |
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313 | * Emacs-style: "M-" prefix |
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314 | * |
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315 | * Also, |
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316 | * "M-x" prefixed strings, append "\r" if needed |
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317 | * "\E]" prefixed strings (XTerm escape sequence) append ST if needed |
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318 | * |
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319 | * returns the converted string length |
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320 | */ |
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321 | int |
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322 | rxvt_Str_escaped (char *str) |
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323 | { |
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324 | char ch, *s, *d; |
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325 | int i, num, append = 0; |
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326 | |
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327 | if (!str || !*str) |
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328 | return 0; |
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329 | |
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330 | d = s = str; |
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331 | |
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332 | if (*s == 'M' && s[1] == '-') |
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333 | { |
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334 | /* Emacs convenience, replace leading `M-..' with `\E..' */ |
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335 | *d++ = C0_ESC; |
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336 | s += 2; |
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337 | if (toupper (*s) == 'X') |
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338 | /* append carriage-return for `M-xcommand' */ |
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339 | for (*d++ = 'x', append = '\r', s++; isspace (*s); s++) ; |
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340 | } |
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341 | for (; (ch = *s++);) |
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342 | { |
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343 | if (ch == '\\') |
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344 | { |
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345 | ch = *s++; |
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346 | if (ch >= '0' && ch <= '7') |
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347 | { /* octal */ |
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348 | num = ch - '0'; |
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349 | for (i = 0; i < 2; i++, s++) |
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350 | { |
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351 | ch = *s; |
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352 | if (ch < '0' || ch > '7') |
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353 | break; |
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354 | num = num * 8 + ch - '0'; |
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355 | } |
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356 | ch = (char)num; |
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357 | } |
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358 | else if (ch == 'a') |
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359 | ch = C0_BEL; /* bell */ |
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360 | else if (ch == 'b') |
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361 | ch = C0_BS; /* backspace */ |
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362 | else if (ch == 'E' || ch == 'e') |
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363 | ch = C0_ESC; /* escape */ |
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364 | else if (ch == 'n') |
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365 | ch = '\n'; /* newline */ |
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366 | else if (ch == 'r') |
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367 | ch = '\r'; /* carriage-return */ |
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368 | else if (ch == 't') |
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369 | ch = C0_HT; /* tab */ |
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370 | } |
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371 | else if (ch == '^') |
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372 | { |
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373 | ch = *s++; |
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374 | ch = toupper (ch); |
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375 | ch = (ch == '?' ? 127 : (ch - '@')); |
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376 | } |
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377 | *d++ = ch; |
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378 | } |
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379 | |
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380 | /* ESC] is an XTerm escape sequence, must be terminated */ |
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381 | if (*str == '\0' && str[1] == C0_ESC && str[2] == ']') |
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382 | append = CHAR_ST; |
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383 | |
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384 | /* add trailing character as required */ |
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385 | if (append && d[-1] != append) |
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386 | *d++ = append; |
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387 | *d = '\0'; |
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388 | |
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389 | return (d - str); |
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390 | } |
262 | } |
391 | |
263 | |
392 | /* |
264 | /* |
393 | * Split a comma-separated string into an array, stripping leading and |
265 | * Split a comma-separated string into an array, stripping leading and |
394 | * trailing spaces from each entry. Empty strings are properly returned |
266 | * trailing spaces from each entry. Empty strings are properly returned |
395 | * Caller should free each entry and array when done |
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396 | */ |
267 | */ |
397 | char ** |
268 | char ** |
398 | rxvt_splitcommastring (const char *cs) |
269 | rxvt_splitcommastring (const char *cs) NOTHROW |
399 | { |
270 | { |
400 | int l, n, p; |
271 | int l, n, p; |
401 | const char *s, *t; |
272 | const char *s, *t; |
402 | char **ret; |
273 | char **ret; |
403 | |
274 | |
… | |
… | |
416 | for ( ; *t && *t != ','; t++) ; |
287 | for ( ; *t && *t != ','; t++) ; |
417 | p = t - s; |
288 | p = t - s; |
418 | ret[l] = (char *)malloc (p + 1); |
289 | ret[l] = (char *)malloc (p + 1); |
419 | strncpy (ret[l], s, p); |
290 | strncpy (ret[l], s, p); |
420 | ret[l][p] = '\0'; |
291 | ret[l][p] = '\0'; |
421 | rxvt_Str_trim (ret[l]); |
292 | rxvt_strtrim (ret[l]); |
422 | s = ++t; |
293 | s = ++t; |
423 | } |
294 | } |
424 | |
295 | |
425 | return ret; |
296 | return ret; |
426 | } |
297 | } |
427 | |
298 | |
428 | void |
299 | void |
429 | rxvt_freecommastring (char **cs) |
300 | rxvt_freecommastring (char **cs) NOTHROW |
430 | { |
301 | { |
431 | for (int i = 0; cs[i]; ++i) |
302 | for (int i = 0; cs[i]; ++i) |
432 | free (cs[i]); |
303 | free (cs[i]); |
433 | |
304 | |
434 | free (cs); |
305 | free (cs); |
435 | } |
306 | } |
436 | |
307 | |
437 | /*----------------------------------------------------------------------* |
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438 | * file searching |
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439 | */ |
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440 | |
308 | |
441 | /* #define DEBUG_SEARCH_PATH */ |
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442 | |
309 | |
443 | #ifdef XPM_BACKGROUND |
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444 | /* |
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445 | * search for FILE in the current working directory, and within the |
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446 | * colon-delimited PATHLIST, adding the file extension EXT if required. |
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447 | * |
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448 | * FILE is either semi-colon or zero terminated |
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449 | */ |
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450 | char * |
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451 | rxvt_File_search_path (const char *pathlist, const char *file, const char *ext) |
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452 | { |
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453 | int maxpath, len; |
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454 | const char *p, *path; |
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455 | char name[256]; |
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456 | |
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457 | if (!access (file, R_OK)) /* found (plain name) in current directory */ |
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458 | return strdup (file); |
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459 | |
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460 | /* semi-colon delimited */ |
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461 | if ((p = strchr (file, ';'))) |
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462 | len = (p - file); |
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463 | else |
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464 | len = strlen (file); |
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465 | |
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466 | #ifdef DEBUG_SEARCH_PATH |
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467 | getcwd (name, sizeof (name)); |
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468 | fprintf (stderr, "pwd: \"%s\"\n", name); |
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469 | fprintf (stderr, "find: \"%.*s\"\n", len, file); |
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470 | #endif |
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471 | |
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472 | /* leave room for an extra '/' and trailing '\0' */ |
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473 | maxpath = sizeof (name) - (len + (ext ? strlen (ext) : 0) + 2); |
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474 | if (maxpath <= 0) |
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475 | return NULL; |
|
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476 | |
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477 | /* check if we can find it now */ |
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478 | strncpy (name, file, len); |
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479 | name[len] = '\0'; |
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480 | |
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481 | if (!access (name, R_OK)) |
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482 | return strdup (name); |
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483 | if (ext) |
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484 | { |
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485 | strcat (name, ext); |
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486 | if (!access (name, R_OK)) |
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487 | return strdup (name); |
|
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488 | } |
|
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489 | for (path = pathlist; path != NULL && *path != '\0'; path = p) |
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490 | { |
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491 | int n; |
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492 | |
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493 | /* colon delimited */ |
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494 | if ((p = strchr (path, ':')) == NULL) |
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495 | p = strchr (path, '\0'); |
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496 | |
|
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497 | n = (p - path); |
|
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498 | if (*p != '\0') |
|
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499 | p++; |
|
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500 | |
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501 | if (n > 0 && n <= maxpath) |
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502 | { |
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503 | strncpy (name, path, n); |
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504 | if (name[n - 1] != '/') |
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505 | name[n++] = '/'; |
|
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506 | name[n] = '\0'; |
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507 | strncat (name, file, len); |
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508 | |
|
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509 | if (!access (name, R_OK)) |
|
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510 | return strdup (name); |
|
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511 | if (ext) |
|
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512 | { |
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513 | strcat (name, ext); |
|
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514 | if (!access (name, R_OK)) |
|
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515 | return strdup (name); |
|
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516 | } |
|
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517 | } |
|
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518 | } |
|
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519 | return NULL; |
|
|
520 | } |
|
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521 | |
|
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522 | char * |
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523 | rxvt_File_find (const char *file, const char *ext, const char *path) |
|
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524 | { |
|
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525 | char *f; |
|
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526 | |
|
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527 | if (file == NULL || *file == '\0') |
|
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528 | return NULL; |
|
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529 | |
|
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530 | f = rxvt_File_search_path (path, file, ext); |
|
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531 | |
|
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532 | #ifdef DEBUG_SEARCH_PATH |
|
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533 | if (f) |
|
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534 | fprintf (stderr, "found: \"%s\"\n", f); |
|
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535 | #endif |
|
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536 | |
|
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537 | return f; |
|
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538 | } |
|
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539 | #endif |
|
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540 | |
|
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541 | // should not be used in interactive programs, for obvious reasons |
|
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542 | void rxvt_usleep (int usecs) |
|
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543 | { |
|
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544 | #if HAVE_NANOSLEEP |
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545 | struct timespec ts; |
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546 | |
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547 | ts.tv_sec = 0; |
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548 | ts.tv_nsec = usecs * 1000; |
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549 | nanosleep (&ts, NULL); |
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550 | #else |
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551 | /* use select for timing */ |
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552 | struct timeval tv; |
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553 | |
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554 | tv.tv_sec = 0; |
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555 | tv.tv_usec = usecs; |
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556 | select (0, NULL, NULL, NULL, &tv); |
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557 | #endif |
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558 | } |
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559 | |
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560 | /*----------------------- end-of-file (C source) -----------------------*/ |
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561 | |
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