[sgt/halibut] / error.c

/*
 * error.c: Halibut error handling
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "halibut.h"

/*
 * Error flags
 */
#define PREFIX 0x0001		       /* give `halibut:' prefix */
#define FILEPOS 0x0002		       /* give file position prefix */

static void do_error(int code, va_list ap) {
    char error[1024];
    char c;
    int i, j;
    char *sp, *sp2;
    wchar_t *wsp, *wsp2;
    filepos fpos, fpos2;
    int flags;

    switch(code) {
      case err_nomemory:	       /* no arguments */
	sprintf(error, "out of memory");
	flags = PREFIX;
	break;
      case err_optnoarg:
	sp = va_arg(ap, char *);
	sprintf(error, "option `-%.200s' requires an argument", sp);
	flags = PREFIX;
	break;
      case err_nosuchopt:
	sp = va_arg(ap, char *);
	sprintf(error, "unrecognised option `-%.200s'", sp);
	flags = PREFIX;
	break;
      case err_cmdcharset:
	sp = va_arg(ap, char *);
	sprintf(error, "character set `%.200s' not recognised", sp);
	flags = PREFIX;
	break;
      case err_futileopt:
	sp = va_arg(ap, char *);
	sp2 = va_arg(ap, char *);
	sprintf(error, "warning: option `-%s' has no effect%s", sp, sp2);
	flags = PREFIX;
	break;
      case err_noinput:		       /* no arguments */
	sprintf(error, "no input files");
	flags = PREFIX;
	break;
      case err_cantopen:
	sp = va_arg(ap, char *);
	sprintf(error, "unable to open input file `%.200s'", sp);
	flags = PREFIX;
	break;
      case err_nodata:		       /* no arguments */
	sprintf(error, "no data in input files");
	flags = PREFIX;
	break;
      case err_brokencodepara:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "every line of a code paragraph should begin `\\c'");
	flags = FILEPOS;
	break;
      case err_kwunclosed:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "expected `}' after paragraph keyword");
	flags = FILEPOS;
	break;
      case err_kwexpected:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "expected a paragraph keyword");
	flags = FILEPOS;
	break;
      case err_kwillegal:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "expected no paragraph keyword");
	flags = FILEPOS;
	break;
      case err_kwtoomany:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "expected only one paragraph keyword");
	flags = FILEPOS;
	break;
      case err_bodyillegal:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "expected no text after paragraph keyword");
	flags = FILEPOS;
	break;
      case err_badparatype:
	wsp = va_arg(ap, wchar_t *);
	sp = utoa_locale_dup(wsp);
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "command `%.200s' unrecognised at start of"
		" paragraph", sp);
	flags = FILEPOS;
	sfree(sp);
	break;
      case err_badmidcmd:
	wsp = va_arg(ap, wchar_t *);
	sp = utoa_locale_dup(wsp);
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "command `%.200s' unexpected in mid-paragraph", sp);
	flags = FILEPOS;
	sfree(sp);
	break;
      case err_unexbrace:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "brace character unexpected in mid-paragraph");
	flags = FILEPOS;
	break;
      case err_explbr:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "expected `{' after command");
	flags = FILEPOS;
	break;
      case err_commenteof:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "end of file unexpected inside `\\#{...}' comment");
	flags = FILEPOS;
	break;
      case err_kwexprbr:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "expected `}' after cross-reference");
	flags = FILEPOS;
	break;
      case err_codequote:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "unable to nest \\q{...} within \\c{...} or \\cw{...}");
	flags = FILEPOS;
	break;	
      case err_missingrbrace:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "unclosed braces at end of paragraph");
	flags = FILEPOS;
	break;
      case err_missingrbrace2:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "unclosed braces at end of input file");
	flags = FILEPOS;
	break;
      case err_nestedstyles:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "unable to nest text styles");
	flags = FILEPOS;
	break;
      case err_nestedindex:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "unable to nest index markings");
	flags = FILEPOS;
	break;
      case err_indexcase:
	fpos = *va_arg(ap, filepos *);
	wsp = va_arg(ap, wchar_t *);
	sp = utoa_locale_dup(wsp);
	fpos2 = *va_arg(ap, filepos *);
	wsp2 = va_arg(ap, wchar_t *);
	sp2 = utoa_locale_dup(wsp2);
	sprintf(error, "warning: index tag `%.200s' used with ", sp);
	sprintf(error + strlen(error), "different case (`%.200s') at %s:%d",
		sp2, fpos2.filename, fpos2.line);
	flags = FILEPOS;
	sfree(sp);
	sfree(sp2);
	break;
      case err_nosuchkw:
	fpos = *va_arg(ap, filepos *);
	wsp = va_arg(ap, wchar_t *);
	sp = utoa_locale_dup(wsp);
	sprintf(error, "unable to resolve cross-reference to `%.200s'", sp);
	flags = FILEPOS;
	sfree(sp);
	break;
      case err_multiBR:
	fpos = *va_arg(ap, filepos *);
	wsp = va_arg(ap, wchar_t *);
	sp = utoa_locale_dup(wsp);
	sprintf(error, "multiple `\\BR' entries given for `%.200s'", sp);
	flags = FILEPOS;
	sfree(sp);
	break;
      case err_nosuchidxtag:
	fpos = *va_arg(ap, filepos *);
	wsp = va_arg(ap, wchar_t *);
	sp = utoa_locale_dup(wsp);
	sprintf(error, "`\\IM' on unknown index tag `%.200s'", sp);
	sfree(sp);
	flags = FILEPOS;
	break;
      case err_cantopenw:
	sp = va_arg(ap, char *);
	sprintf(error, "unable to open output file `%.200s'", sp);
	flags = PREFIX;
	break;
      case err_macroexists:
	fpos = *va_arg(ap, filepos *);
	wsp = va_arg(ap, wchar_t *);
	sp = utoa_locale_dup(wsp);
	sprintf(error, "macro `%.200s' already defined", sp);
	flags = FILEPOS;
	sfree(sp);
	break;
      case err_sectjump:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "expected higher heading levels before this one");
	flags = FILEPOS;
	break;
      case err_winhelp_ctxclash:
	fpos = *va_arg(ap, filepos *);
	sp = va_arg(ap, char *);
	sp2 = va_arg(ap, char *);
	sprintf(error, "Windows Help context id `%.200s' clashes with "
		"previously defined `%.200s'", sp, sp2);
	flags = FILEPOS;
	break;
      case err_multikw:
	fpos = *va_arg(ap, filepos *);
	fpos2 = *va_arg(ap, filepos *);
	wsp = va_arg(ap, wchar_t *);
	sp = utoa_locale_dup(wsp);
	sprintf(error, "paragraph keyword `%.200s' already defined at ", sp);
	sprintf(error + strlen(error), "%s:%d", fpos2.filename, fpos2.line);
	flags = FILEPOS;
	sfree(sp);
	break;
      case err_misplacedlcont:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "\\lcont is only expected after a list item");
	flags = FILEPOS;
	break;
      case err_sectmarkerinblock:
	fpos = *va_arg(ap, filepos *);
	sp = va_arg(ap, char *);
	sprintf(error, "section headings are not supported within \\%.100s",
		sp);
	flags = FILEPOS;
	break;
      case err_infodirentry:
	fpos = *va_arg(ap, filepos *);
	sprintf(error, "\\cfg{info-dir-entry} expects at least three"
		" parameters");
	flags = FILEPOS;
	break;
      case err_infonodechar:
	fpos = *va_arg(ap, filepos *);
	c = (char)va_arg(ap, int);
	sprintf(error, "info output format does not support '%c' in"
		" node names; removing", c);
	flags = FILEPOS;
	break;
      case err_text_codeline:
	fpos = *va_arg(ap, filepos *);
	i = va_arg(ap, int);
	j = va_arg(ap, int);
	sprintf(error, "warning: code paragraph line is %d chars wide, wider"
		" than body width %d", i, j);
	flags = FILEPOS;
	break;
      case err_htmlver:
	fpos = *va_arg(ap, filepos *);
	wsp = va_arg(ap, wchar_t *);
	sp = utoa_locale_dup(wsp);
	sprintf(error, "unrecognised HTML version keyword `%.200s'", sp);
	sfree(sp);
	flags = FILEPOS;
	break;
      case err_charset:
	fpos = *va_arg(ap, filepos *);
	wsp = va_arg(ap, wchar_t *);
	sp = utoa_locale_dup(wsp);
	sprintf(error, "character set `%.200s' not recognised", sp);
	flags = FILEPOS;
	sfree(sp);
	break;
      case err_whatever:
	sp = va_arg(ap, char *);
        vsprintf(error, sp, ap);
        flags = PREFIX;
        break;
    }

    if (flags & PREFIX)
	fputs("halibut: ", stderr);
    if (flags & FILEPOS) {
	fprintf(stderr, "%s:", fpos.filename);
	if (fpos.line > 0)
	    fprintf(stderr, "%d:", fpos.line);
	if (fpos.col > 0)
	    fprintf(stderr, "%d:", fpos.col);
	fputc(' ', stderr);
    }
    fputs(error, stderr);
    fputc('\n', stderr);
}

void fatal(int code, ...) {
    va_list ap;
    va_start(ap, code);
    do_error(code, ap);
    va_end(ap);
    exit(EXIT_FAILURE);
}

void error(int code, ...) {
    va_list ap;
    va_start(ap, code);
    do_error(code, ap);
    va_end(ap);
}
Commit	Line	Data
d7482997	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];
f4551933	18	char c;
db662ca1	19	int i, j;
d7482997	20	char sp, sp2;
da090173	21	wchar_t wsp, wsp2;
d7482997	22	filepos fpos, fpos2;
	23	int flags;
	24
	25	switch(code) {
	26	case err_nomemory: /* no arguments */
	27	sprintf(error, "out of memory");
	28	flags = PREFIX;
	29	break;
	30	case err_optnoarg:
	31	sp = va_arg(ap, char *);
	32	sprintf(error, "option `-%.200s' requires an argument", sp);
	33	flags = PREFIX;
	34	break;
	35	case err_nosuchopt:
	36	sp = va_arg(ap, char *);
	37	sprintf(error, "unrecognised option `-%.200s'", sp);
	38	flags = PREFIX;
	39	break;
675958c3	40	case err_cmdcharset:
	41	sp = va_arg(ap, char *);
	42	sprintf(error, "character set `%.200s' not recognised", sp);
	43	flags = PREFIX;
	44	break;
	45	case err_futileopt:
	46	sp = va_arg(ap, char *);
	47	sp2 = va_arg(ap, char *);
	48	sprintf(error, "warning: option `-%s' has no effect%s", sp, sp2);
	49	flags = PREFIX;
	50	break;
d7482997	51	case err_noinput: /* no arguments */
	52	sprintf(error, "no input files");
	53	flags = PREFIX;
	54	break;
	55	case err_cantopen:
	56	sp = va_arg(ap, char *);
	57	sprintf(error, "unable to open input file `%.200s'", sp);
	58	flags = PREFIX;
	59	break;
	60	case err_nodata: /* no arguments */
	61	sprintf(error, "no data in input files");
	62	flags = PREFIX;
	63	break;
	64	case err_brokencodepara:
	65	fpos = va_arg(ap, filepos );
	66	sprintf(error, "every line of a code paragraph should begin `\\c'");
	67	flags = FILEPOS;
	68	break;
	69	case err_kwunclosed:
	70	fpos = va_arg(ap, filepos );
	71	sprintf(error, "expected `}' after paragraph keyword");
	72	flags = FILEPOS;
	73	break;
	74	case err_kwexpected:
	75	fpos = va_arg(ap, filepos );
	76	sprintf(error, "expected a paragraph keyword");
	77	flags = FILEPOS;
	78	break;
	79	case err_kwillegal:
	80	fpos = va_arg(ap, filepos );
	81	sprintf(error, "expected no paragraph keyword");
	82	flags = FILEPOS;
	83	break;
	84	case err_kwtoomany:
	85	fpos = va_arg(ap, filepos );
	86	sprintf(error, "expected only one paragraph keyword");
	87	flags = FILEPOS;
	88	break;
	89	case err_bodyillegal:
	90	fpos = va_arg(ap, filepos );
	91	sprintf(error, "expected no text after paragraph keyword");
	92	flags = FILEPOS;
	93	break;
	94	case err_badparatype:
	95	wsp = va_arg(ap, wchar_t *);
7e976207	96	sp = utoa_locale_dup(wsp);
d7482997	97	fpos = va_arg(ap, filepos );
	98	sprintf(error, "command `%.200s' unrecognised at start of"
	99	" paragraph", sp);
	100	flags = FILEPOS;
7e976207	101	sfree(sp);
d7482997	102	break;
	103	case err_badmidcmd:
	104	wsp = va_arg(ap, wchar_t *);
7e976207	105	sp = utoa_locale_dup(wsp);
d7482997	106	fpos = va_arg(ap, filepos );
	107	sprintf(error, "command `%.200s' unexpected in mid-paragraph", sp);
	108	flags = FILEPOS;
7e976207	109	sfree(sp);
d7482997	110	break;
	111	case err_unexbrace:
	112	fpos = va_arg(ap, filepos );
	113	sprintf(error, "brace character unexpected in mid-paragraph");
	114	flags = FILEPOS;
	115	break;
	116	case err_explbr:
	117	fpos = va_arg(ap, filepos );
	118	sprintf(error, "expected `{' after command");
	119	flags = FILEPOS;
	120	break;
	121	case err_commenteof:
	122	fpos = va_arg(ap, filepos );
	123	sprintf(error, "end of file unexpected inside `\\#{...}' comment");
	124	flags = FILEPOS;
	125	break;
	126	case err_kwexprbr:
	127	fpos = va_arg(ap, filepos );
	128	sprintf(error, "expected `}' after cross-reference");
	129	flags = FILEPOS;
	130	break;
6ff15f2b	131	case err_codequote:
	132	fpos = va_arg(ap, filepos );
	133	sprintf(error, "unable to nest \\q{...} within \\c{...} or \\cw{...}");
	134	flags = FILEPOS;
	135	break;
d7482997	136	case err_missingrbrace:
	137	fpos = va_arg(ap, filepos );
	138	sprintf(error, "unclosed braces at end of paragraph");
	139	flags = FILEPOS;
	140	break;
7136a6c7	141	case err_missingrbrace2:
	142	fpos = va_arg(ap, filepos );
	143	sprintf(error, "unclosed braces at end of input file");
	144	flags = FILEPOS;
	145	break;
d7482997	146	case err_nestedstyles:
	147	fpos = va_arg(ap, filepos );
	148	sprintf(error, "unable to nest text styles");
	149	flags = FILEPOS;
	150	break;
	151	case err_nestedindex:
	152	fpos = va_arg(ap, filepos );
	153	sprintf(error, "unable to nest index markings");
	154	flags = FILEPOS;
	155	break;
da090173	156	case err_indexcase:
	157	fpos = va_arg(ap, filepos );
	158	wsp = va_arg(ap, wchar_t *);
	159	sp = utoa_locale_dup(wsp);
	160	fpos2 = va_arg(ap, filepos );
	161	wsp2 = va_arg(ap, wchar_t *);
	162	sp2 = utoa_locale_dup(wsp2);
	163	sprintf(error, "warning: index tag `%.200s' used with ", sp);
	164	sprintf(error + strlen(error), "different case (`%.200s') at %s:%d",
	165	sp2, fpos2.filename, fpos2.line);
	166	flags = FILEPOS;
	167	sfree(sp);
	168	sfree(sp2);
	169	break;
d7482997	170	case err_nosuchkw:
	171	fpos = va_arg(ap, filepos );
	172	wsp = va_arg(ap, wchar_t *);
7e976207	173	sp = utoa_locale_dup(wsp);
d7482997	174	sprintf(error, "unable to resolve cross-reference to `%.200s'", sp);
d7482997	175	flags = FILEPOS;
7e976207	176	sfree(sp);
d7482997	177	break;
	178	case err_multiBR:
	179	fpos = va_arg(ap, filepos );
	180	wsp = va_arg(ap, wchar_t *);
7e976207	181	sp = utoa_locale_dup(wsp);
d7482997	182	sprintf(error, "multiple `\\BR' entries given for `%.200s'", sp);
d7482997	183	flags = FILEPOS;
7e976207	184	sfree(sp);
d7482997	185	break;
d7482997	186	case err_nosuchidxtag:
7e976207	187	fpos = va_arg(ap, filepos );
d7482997	188	wsp = va_arg(ap, wchar_t *);
7e976207	189	sp = utoa_locale_dup(wsp);
d7482997	190	sprintf(error, "`\\IM' on unknown index tag `%.200s'", sp);
7e976207	191	sfree(sp);
7e976207	192	flags = FILEPOS;
d7482997	193	break;
	194	case err_cantopenw:
	195	sp = va_arg(ap, char *);
	196	sprintf(error, "unable to open output file `%.200s'", sp);
	197	flags = PREFIX;
	198	break;
	199	case err_macroexists:
	200	fpos = va_arg(ap, filepos );
	201	wsp = va_arg(ap, wchar_t *);
7e976207	202	sp = utoa_locale_dup(wsp);
d7482997	203	sprintf(error, "macro `%.200s' already defined", sp);
d7482997	204	flags = FILEPOS;
7e976207	205	sfree(sp);
d7482997	206	break;
	207	case err_sectjump:
	208	fpos = va_arg(ap, filepos );
	209	sprintf(error, "expected higher heading levels before this one");
	210	flags = FILEPOS;
	211	break;
	212	case err_winhelp_ctxclash:
	213	fpos = va_arg(ap, filepos );
	214	sp = va_arg(ap, char *);
	215	sp2 = va_arg(ap, char *);
	216	sprintf(error, "Windows Help context id `%.200s' clashes with "
	217	"previously defined `%.200s'", sp, sp2);
	218	flags = FILEPOS;
	219	break;
	220	case err_multikw:
	221	fpos = va_arg(ap, filepos );
	222	fpos2 = va_arg(ap, filepos );
	223	wsp = va_arg(ap, wchar_t *);
7e976207	224	sp = utoa_locale_dup(wsp);
d7482997	225	sprintf(error, "paragraph keyword `%.200s' already defined at ", sp);
	226	sprintf(error + strlen(error), "%s:%d", fpos2.filename, fpos2.line);
	227	flags = FILEPOS;
7e976207	228	sfree(sp);
d7482997	229	break;
7136a6c7	230	case err_misplacedlcont:
	231	fpos = va_arg(ap, filepos );
	232	sprintf(error, "\\lcont is only expected after a list item");
	233	flags = FILEPOS;
	234	break;
2614b01d	235	case err_sectmarkerinblock:
7136a6c7	236	fpos = va_arg(ap, filepos );
2614b01d	237	sp = va_arg(ap, char *);
	238	sprintf(error, "section headings are not supported within \\%.100s",
	239	sp);
7136a6c7	240	flags = FILEPOS;
d4c7e130	241	break;
	242	case err_infodirentry:
	243	fpos = va_arg(ap, filepos );
	244	sprintf(error, "\\cfg{info-dir-entry} expects at least three"
	245	" parameters");
	246	flags = FILEPOS;
	247	break;
f4551933	248	case err_infonodechar:
	249	fpos = va_arg(ap, filepos );
	250	c = (char)va_arg(ap, int);
	251	sprintf(error, "info output format does not support '%c' in"
	252	" node names; removing", c);
	253	flags = FILEPOS;
	254	break;
db662ca1	255	case err_text_codeline:
	256	fpos = va_arg(ap, filepos );
	257	i = va_arg(ap, int);
	258	j = va_arg(ap, int);
	259	sprintf(error, "warning: code paragraph line is %d chars wide, wider"
	260	" than body width %d", i, j);
	261	flags = FILEPOS;
	262	break;
27bdc5ab	263	case err_htmlver:
	264	fpos = va_arg(ap, filepos );
	265	wsp = va_arg(ap, wchar_t *);
	266	sp = utoa_locale_dup(wsp);
	267	sprintf(error, "unrecognised HTML version keyword `%.200s'", sp);
	268	sfree(sp);
	269	flags = FILEPOS;
	270	break;
0960a3d8	271	case err_charset:
	272	fpos = va_arg(ap, filepos );
	273	wsp = va_arg(ap, wchar_t *);
	274	sp = utoa_locale_dup(wsp);
	275	sprintf(error, "character set `%.200s' not recognised", sp);
	276	flags = FILEPOS;
	277	sfree(sp);
	278	break;
d7482997	279	case err_whatever:
	280	sp = va_arg(ap, char *);
	281	vsprintf(error, sp, ap);
	282	flags = PREFIX;
	283	break;
	284	}
	285
	286	if (flags & PREFIX)
	287	fputs("halibut: ", stderr);
	288	if (flags & FILEPOS) {
6a0b9d08	289	fprintf(stderr, "%s:", fpos.filename);
	290	if (fpos.line > 0)
	291	fprintf(stderr, "%d:", fpos.line);
d7482997	292	if (fpos.col > 0)
	293	fprintf(stderr, "%d:", fpos.col);
	294	fputc(' ', stderr);
	295	}
	296	fputs(error, stderr);
	297	fputc('\n', stderr);
	298	}
	299
	300	void fatal(int code, ...) {
	301	va_list ap;
	302	va_start(ap, code);
	303	do_error(code, ap);
	304	va_end(ap);
	305	exit(EXIT_FAILURE);
	306	}
	307
	308	void error(int code, ...) {
	309	va_list ap;
	310	va_start(ap, code);
	311	do_error(code, ap);
	312	va_end(ap);
	313	}