| 1 | /* |
| 2 | * error.c: Halibut error handling |
| 3 | */ |
| 4 | |
| 5 | #include <stdio.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <stdarg.h> |
| 8 | #include "halibut.h" |
| 9 | |
| 10 | /* |
| 11 | * Error flags |
| 12 | */ |
| 13 | #define PREFIX 0x0001 /* give `halibut:' prefix */ |
| 14 | #define FILEPOS 0x0002 /* give file position prefix */ |
| 15 | |
| 16 | static void do_error(int code, va_list ap) { |
| 17 | char error[1024]; |
| 18 | char c; |
| 19 | int i, j; |
| 20 | char *sp, *sp2; |
| 21 | wchar_t *wsp, *wsp2; |
| 22 | unsigned wc; |
| 23 | filepos fpos, fpos2, *fposp; |
| 24 | int flags = 0; |
| 25 | |
| 26 | switch(code) { |
| 27 | case err_nomemory: /* no arguments */ |
| 28 | sprintf(error, "out of memory"); |
| 29 | flags = PREFIX; |
| 30 | break; |
| 31 | case err_optnoarg: |
| 32 | sp = va_arg(ap, char *); |
| 33 | sprintf(error, "option `-%.200s' requires an argument", sp); |
| 34 | flags = PREFIX; |
| 35 | break; |
| 36 | case err_nosuchopt: |
| 37 | sp = va_arg(ap, char *); |
| 38 | sprintf(error, "unrecognised option `-%.200s'", sp); |
| 39 | flags = PREFIX; |
| 40 | break; |
| 41 | case err_cmdcharset: |
| 42 | sp = va_arg(ap, char *); |
| 43 | sprintf(error, "character set `%.200s' not recognised", sp); |
| 44 | flags = PREFIX; |
| 45 | break; |
| 46 | case err_futileopt: |
| 47 | sp = va_arg(ap, char *); |
| 48 | sp2 = va_arg(ap, char *); |
| 49 | sprintf(error, "warning: option `-%s' has no effect%s", sp, sp2); |
| 50 | flags = PREFIX; |
| 51 | break; |
| 52 | case err_noinput: /* no arguments */ |
| 53 | sprintf(error, "no input files"); |
| 54 | flags = PREFIX; |
| 55 | break; |
| 56 | case err_cantopen: |
| 57 | sp = va_arg(ap, char *); |
| 58 | sprintf(error, "unable to open input file `%.200s'", sp); |
| 59 | flags = PREFIX; |
| 60 | break; |
| 61 | case err_nodata: /* no arguments */ |
| 62 | sprintf(error, "no data in input files"); |
| 63 | flags = PREFIX; |
| 64 | break; |
| 65 | case err_brokencodepara: |
| 66 | fpos = *va_arg(ap, filepos *); |
| 67 | sprintf(error, "every line of a code paragraph should begin `\\c'"); |
| 68 | flags = FILEPOS; |
| 69 | break; |
| 70 | case err_kwunclosed: |
| 71 | fpos = *va_arg(ap, filepos *); |
| 72 | sprintf(error, "expected `}' after paragraph keyword"); |
| 73 | flags = FILEPOS; |
| 74 | break; |
| 75 | case err_kwexpected: |
| 76 | fpos = *va_arg(ap, filepos *); |
| 77 | sprintf(error, "expected a paragraph keyword"); |
| 78 | flags = FILEPOS; |
| 79 | break; |
| 80 | case err_kwillegal: |
| 81 | fpos = *va_arg(ap, filepos *); |
| 82 | sprintf(error, "expected no paragraph keyword"); |
| 83 | flags = FILEPOS; |
| 84 | break; |
| 85 | case err_kwtoomany: |
| 86 | fpos = *va_arg(ap, filepos *); |
| 87 | sprintf(error, "expected only one paragraph keyword"); |
| 88 | flags = FILEPOS; |
| 89 | break; |
| 90 | case err_bodyillegal: |
| 91 | fpos = *va_arg(ap, filepos *); |
| 92 | sprintf(error, "expected no text after paragraph keyword"); |
| 93 | flags = FILEPOS; |
| 94 | break; |
| 95 | case err_badparatype: |
| 96 | wsp = va_arg(ap, wchar_t *); |
| 97 | sp = utoa_locale_dup(wsp); |
| 98 | fpos = *va_arg(ap, filepos *); |
| 99 | sprintf(error, "command `%.200s' unrecognised at start of" |
| 100 | " paragraph", sp); |
| 101 | flags = FILEPOS; |
| 102 | sfree(sp); |
| 103 | break; |
| 104 | case err_badmidcmd: |
| 105 | wsp = va_arg(ap, wchar_t *); |
| 106 | sp = utoa_locale_dup(wsp); |
| 107 | fpos = *va_arg(ap, filepos *); |
| 108 | sprintf(error, "command `%.200s' unexpected in mid-paragraph", sp); |
| 109 | flags = FILEPOS; |
| 110 | sfree(sp); |
| 111 | break; |
| 112 | case err_unexbrace: |
| 113 | fpos = *va_arg(ap, filepos *); |
| 114 | sprintf(error, "brace character unexpected in mid-paragraph"); |
| 115 | flags = FILEPOS; |
| 116 | break; |
| 117 | case err_explbr: |
| 118 | fpos = *va_arg(ap, filepos *); |
| 119 | sprintf(error, "expected `{' after command"); |
| 120 | flags = FILEPOS; |
| 121 | break; |
| 122 | case err_commenteof: |
| 123 | fpos = *va_arg(ap, filepos *); |
| 124 | sprintf(error, "end of file unexpected inside `\\#{...}' comment"); |
| 125 | flags = FILEPOS; |
| 126 | break; |
| 127 | case err_kwexprbr: |
| 128 | fpos = *va_arg(ap, filepos *); |
| 129 | sprintf(error, "expected `}' after cross-reference"); |
| 130 | flags = FILEPOS; |
| 131 | break; |
| 132 | case err_codequote: |
| 133 | fpos = *va_arg(ap, filepos *); |
| 134 | sprintf(error, "unable to nest \\q{...} within \\c{...} or \\cw{...}"); |
| 135 | flags = FILEPOS; |
| 136 | break; |
| 137 | case err_missingrbrace: |
| 138 | fpos = *va_arg(ap, filepos *); |
| 139 | sprintf(error, "unclosed braces at end of paragraph"); |
| 140 | flags = FILEPOS; |
| 141 | break; |
| 142 | case err_missingrbrace2: |
| 143 | fpos = *va_arg(ap, filepos *); |
| 144 | sprintf(error, "unclosed braces at end of input file"); |
| 145 | flags = FILEPOS; |
| 146 | break; |
| 147 | case err_nestedstyles: |
| 148 | fpos = *va_arg(ap, filepos *); |
| 149 | sprintf(error, "unable to nest text styles"); |
| 150 | flags = FILEPOS; |
| 151 | break; |
| 152 | case err_nestedindex: |
| 153 | fpos = *va_arg(ap, filepos *); |
| 154 | sprintf(error, "unable to nest index markings"); |
| 155 | flags = FILEPOS; |
| 156 | break; |
| 157 | case err_indexcase: |
| 158 | fpos = *va_arg(ap, filepos *); |
| 159 | wsp = va_arg(ap, wchar_t *); |
| 160 | sp = utoa_locale_dup(wsp); |
| 161 | fpos2 = *va_arg(ap, filepos *); |
| 162 | wsp2 = va_arg(ap, wchar_t *); |
| 163 | sp2 = utoa_locale_dup(wsp2); |
| 164 | sprintf(error, "warning: index tag `%.200s' used with ", sp); |
| 165 | sprintf(error + strlen(error), "different case (`%.200s') at %s:%d", |
| 166 | sp2, fpos2.filename, fpos2.line); |
| 167 | flags = FILEPOS; |
| 168 | sfree(sp); |
| 169 | sfree(sp2); |
| 170 | break; |
| 171 | case err_nosuchkw: |
| 172 | fpos = *va_arg(ap, filepos *); |
| 173 | wsp = va_arg(ap, wchar_t *); |
| 174 | sp = utoa_locale_dup(wsp); |
| 175 | sprintf(error, "unable to resolve cross-reference to `%.200s'", sp); |
| 176 | flags = FILEPOS; |
| 177 | sfree(sp); |
| 178 | break; |
| 179 | case err_multiBR: |
| 180 | fpos = *va_arg(ap, filepos *); |
| 181 | wsp = va_arg(ap, wchar_t *); |
| 182 | sp = utoa_locale_dup(wsp); |
| 183 | sprintf(error, "multiple `\\BR' entries given for `%.200s'", sp); |
| 184 | flags = FILEPOS; |
| 185 | sfree(sp); |
| 186 | break; |
| 187 | case err_nosuchidxtag: |
| 188 | fpos = *va_arg(ap, filepos *); |
| 189 | wsp = va_arg(ap, wchar_t *); |
| 190 | sp = utoa_locale_dup(wsp); |
| 191 | sprintf(error, "`\\IM' on unknown index tag `%.200s'", sp); |
| 192 | sfree(sp); |
| 193 | flags = FILEPOS; |
| 194 | break; |
| 195 | case err_cantopenw: |
| 196 | sp = va_arg(ap, char *); |
| 197 | sprintf(error, "unable to open output file `%.200s'", sp); |
| 198 | flags = PREFIX; |
| 199 | break; |
| 200 | case err_macroexists: |
| 201 | fpos = *va_arg(ap, filepos *); |
| 202 | wsp = va_arg(ap, wchar_t *); |
| 203 | sp = utoa_locale_dup(wsp); |
| 204 | sprintf(error, "macro `%.200s' already defined", sp); |
| 205 | flags = FILEPOS; |
| 206 | sfree(sp); |
| 207 | break; |
| 208 | case err_sectjump: |
| 209 | fpos = *va_arg(ap, filepos *); |
| 210 | sprintf(error, "expected higher heading levels before this one"); |
| 211 | flags = FILEPOS; |
| 212 | break; |
| 213 | case err_winhelp_ctxclash: |
| 214 | fpos = *va_arg(ap, filepos *); |
| 215 | sp = va_arg(ap, char *); |
| 216 | sp2 = va_arg(ap, char *); |
| 217 | sprintf(error, "Windows Help context id `%.200s' clashes with " |
| 218 | "previously defined `%.200s'", sp, sp2); |
| 219 | flags = FILEPOS; |
| 220 | break; |
| 221 | case err_multikw: |
| 222 | fpos = *va_arg(ap, filepos *); |
| 223 | fpos2 = *va_arg(ap, filepos *); |
| 224 | wsp = va_arg(ap, wchar_t *); |
| 225 | sp = utoa_locale_dup(wsp); |
| 226 | sprintf(error, "paragraph keyword `%.200s' already defined at ", sp); |
| 227 | sprintf(error + strlen(error), "%s:%d", fpos2.filename, fpos2.line); |
| 228 | flags = FILEPOS; |
| 229 | sfree(sp); |
| 230 | break; |
| 231 | case err_misplacedlcont: |
| 232 | fpos = *va_arg(ap, filepos *); |
| 233 | sprintf(error, "\\lcont is only expected after a list item"); |
| 234 | flags = FILEPOS; |
| 235 | break; |
| 236 | case err_sectmarkerinblock: |
| 237 | fpos = *va_arg(ap, filepos *); |
| 238 | sp = va_arg(ap, char *); |
| 239 | sprintf(error, "section headings are not supported within \\%.100s", |
| 240 | sp); |
| 241 | flags = FILEPOS; |
| 242 | break; |
| 243 | case err_cfginsufarg: |
| 244 | fpos = *va_arg(ap, filepos *); |
| 245 | sp = va_arg(ap, char *); |
| 246 | i = va_arg(ap, int); |
| 247 | sprintf(error, "\\cfg{%s} expects at least %d parameter%s", sp, |
| 248 | i, (i==1)?"":"s"); |
| 249 | flags = FILEPOS; |
| 250 | break; |
| 251 | case err_infonodechar: |
| 252 | fposp = va_arg(ap, filepos *); |
| 253 | c = (char)va_arg(ap, int); |
| 254 | sprintf(error, "info output format does not support '%c' in" |
| 255 | " node names; removing", c); |
| 256 | if (fposp) { |
| 257 | flags = FILEPOS; |
| 258 | fpos = *fposp; |
| 259 | } |
| 260 | break; |
| 261 | case err_text_codeline: |
| 262 | fpos = *va_arg(ap, filepos *); |
| 263 | i = va_arg(ap, int); |
| 264 | j = va_arg(ap, int); |
| 265 | sprintf(error, "warning: code paragraph line is %d chars wide, wider" |
| 266 | " than body width %d", i, j); |
| 267 | flags = FILEPOS; |
| 268 | break; |
| 269 | case err_htmlver: |
| 270 | fpos = *va_arg(ap, filepos *); |
| 271 | wsp = va_arg(ap, wchar_t *); |
| 272 | sp = utoa_locale_dup(wsp); |
| 273 | sprintf(error, "unrecognised HTML version keyword `%.200s'", sp); |
| 274 | sfree(sp); |
| 275 | flags = FILEPOS; |
| 276 | break; |
| 277 | case err_charset: |
| 278 | fpos = *va_arg(ap, filepos *); |
| 279 | wsp = va_arg(ap, wchar_t *); |
| 280 | sp = utoa_locale_dup(wsp); |
| 281 | sprintf(error, "character set `%.200s' not recognised", sp); |
| 282 | flags = FILEPOS; |
| 283 | sfree(sp); |
| 284 | break; |
| 285 | case err_nofont: |
| 286 | fpos = *va_arg(ap, filepos *); |
| 287 | wsp = va_arg(ap, wchar_t *); |
| 288 | sp = utoa_locale_dup(wsp); |
| 289 | sprintf(error, "font `%.200s' not recognised", sp); |
| 290 | flags = FILEPOS; |
| 291 | sfree(sp); |
| 292 | break; |
| 293 | case err_afmeof: |
| 294 | fpos = *va_arg(ap, filepos *); |
| 295 | sprintf(error, "AFM file ended unexpectedly"); |
| 296 | flags = FILEPOS; |
| 297 | break; |
| 298 | case err_afmkey: |
| 299 | fpos = *va_arg(ap, filepos *); |
| 300 | sp = va_arg(ap, char *); |
| 301 | sprintf(error, "required AFM key '%.200s' missing", sp); |
| 302 | flags = FILEPOS; |
| 303 | break; |
| 304 | case err_afmvers: |
| 305 | fpos = *va_arg(ap, filepos *); |
| 306 | sprintf(error, "unsupported AFM version"); |
| 307 | flags = FILEPOS; |
| 308 | break; |
| 309 | case err_afmval: |
| 310 | fpos = *va_arg(ap, filepos *); |
| 311 | sp = va_arg(ap, char *); |
| 312 | i = va_arg(ap, int); |
| 313 | if (i == 1) |
| 314 | sprintf(error, "AFM key '%.200s' requires a value", sp); |
| 315 | else |
| 316 | sprintf(error, "AFM key '%.200s' requires %d values", sp, i); |
| 317 | flags = FILEPOS; |
| 318 | break; |
| 319 | case err_pfeof: |
| 320 | fpos = *va_arg(ap, filepos *); |
| 321 | sprintf(error, "Type 1 font file ended unexpectedly"); |
| 322 | flags = FILEPOS; |
| 323 | break; |
| 324 | case err_pfhead: |
| 325 | fpos = *va_arg(ap, filepos *); |
| 326 | sprintf(error, "Type 1 font file header line invalid"); |
| 327 | flags = FILEPOS; |
| 328 | break; |
| 329 | case err_pfbad: |
| 330 | fpos = *va_arg(ap, filepos *); |
| 331 | sprintf(error, "Type 1 font file invalid"); |
| 332 | flags = FILEPOS; |
| 333 | break; |
| 334 | case err_pfnoafm: |
| 335 | fpos = *va_arg(ap, filepos *); |
| 336 | sp = va_arg(ap, char *); |
| 337 | sprintf(error, "no metrics available for Type 1 font '%.200s'", sp); |
| 338 | flags = FILEPOS; |
| 339 | break; |
| 340 | case err_chmnames: |
| 341 | sprintf(error, "only one of html-mshtmlhelp-chm and " |
| 342 | "html-mshtmlhelp-hhp found"); |
| 343 | flags = PREFIX; |
| 344 | break; |
| 345 | case err_sfntnotable: |
| 346 | fpos = *va_arg(ap, filepos *); |
| 347 | sp = va_arg(ap, char *); |
| 348 | sprintf(error, "font has no '%.4s' table", sp); |
| 349 | flags = FILEPOS; |
| 350 | break; |
| 351 | case err_sfntnopsname: |
| 352 | fpos = *va_arg(ap, filepos *); |
| 353 | sprintf(error, "font has no PostScript name"); |
| 354 | flags = FILEPOS; |
| 355 | break; |
| 356 | case err_sfntbadtable: |
| 357 | fpos = *va_arg(ap, filepos *); |
| 358 | sp = va_arg(ap, char *); |
| 359 | sprintf(error, "font has an invalid '%.4s' table", sp); |
| 360 | flags = FILEPOS; |
| 361 | break; |
| 362 | case err_sfntnounicmap: |
| 363 | fpos = *va_arg(ap, filepos *); |
| 364 | sprintf(error, "font has no UCS-2 character map"); |
| 365 | flags = FILEPOS; |
| 366 | break; |
| 367 | case err_sfnttablevers: |
| 368 | fpos = *va_arg(ap, filepos *); |
| 369 | sp = va_arg(ap, char *); |
| 370 | sprintf(error, "font has an unsupported '%.4s' table version", sp); |
| 371 | flags = FILEPOS; |
| 372 | break; |
| 373 | case err_sfntbadhdr: |
| 374 | fpos = *va_arg(ap, filepos *); |
| 375 | sprintf(error, "font has an invalid header"); |
| 376 | flags = FILEPOS; |
| 377 | break; |
| 378 | case err_sfntbadglyph: |
| 379 | fpos = *va_arg(ap, filepos *); |
| 380 | wc = va_arg(ap, unsigned); |
| 381 | sprintf(error, |
| 382 | "warning: character U+%04X references an non-existent glyph", |
| 383 | wc); |
| 384 | flags = FILEPOS; |
| 385 | break; |
| 386 | case err_whatever: |
| 387 | sp = va_arg(ap, char *); |
| 388 | vsprintf(error, sp, ap); |
| 389 | flags = PREFIX; |
| 390 | break; |
| 391 | } |
| 392 | |
| 393 | if (flags & PREFIX) |
| 394 | fputs("halibut: ", stderr); |
| 395 | if (flags & FILEPOS) { |
| 396 | fprintf(stderr, "%s:", fpos.filename ? fpos.filename : "<standard input>"); |
| 397 | if (fpos.line > 0) |
| 398 | fprintf(stderr, "%d:", fpos.line); |
| 399 | if (fpos.col > 0) |
| 400 | fprintf(stderr, "%d:", fpos.col); |
| 401 | fputc(' ', stderr); |
| 402 | } |
| 403 | fputs(error, stderr); |
| 404 | fputc('\n', stderr); |
| 405 | } |
| 406 | |
| 407 | void fatal(int code, ...) { |
| 408 | va_list ap; |
| 409 | va_start(ap, code); |
| 410 | do_error(code, ap); |
| 411 | va_end(ap); |
| 412 | exit(EXIT_FAILURE); |
| 413 | } |
| 414 | |
| 415 | void error(int code, ...) { |
| 416 | va_list ap; |
| 417 | va_start(ap, code); |
| 418 | do_error(code, ap); |
| 419 | va_end(ap); |
| 420 | } |