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]; |
18 | char auxbuf[256]; |
f4551933 |
19 | char c; |
d7482997 |
20 | char *sp, *sp2; |
21 | wchar_t *wsp; |
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; |
40 | case err_noinput: /* no arguments */ |
41 | sprintf(error, "no input files"); |
42 | flags = PREFIX; |
43 | break; |
44 | case err_cantopen: |
45 | sp = va_arg(ap, char *); |
46 | sprintf(error, "unable to open input file `%.200s'", sp); |
47 | flags = PREFIX; |
48 | break; |
49 | case err_nodata: /* no arguments */ |
50 | sprintf(error, "no data in input files"); |
51 | flags = PREFIX; |
52 | break; |
53 | case err_brokencodepara: |
54 | fpos = *va_arg(ap, filepos *); |
55 | sprintf(error, "every line of a code paragraph should begin `\\c'"); |
56 | flags = FILEPOS; |
57 | break; |
58 | case err_kwunclosed: |
59 | fpos = *va_arg(ap, filepos *); |
60 | sprintf(error, "expected `}' after paragraph keyword"); |
61 | flags = FILEPOS; |
62 | break; |
63 | case err_kwexpected: |
64 | fpos = *va_arg(ap, filepos *); |
65 | sprintf(error, "expected a paragraph keyword"); |
66 | flags = FILEPOS; |
67 | break; |
68 | case err_kwillegal: |
69 | fpos = *va_arg(ap, filepos *); |
70 | sprintf(error, "expected no paragraph keyword"); |
71 | flags = FILEPOS; |
72 | break; |
73 | case err_kwtoomany: |
74 | fpos = *va_arg(ap, filepos *); |
75 | sprintf(error, "expected only one paragraph keyword"); |
76 | flags = FILEPOS; |
77 | break; |
78 | case err_bodyillegal: |
79 | fpos = *va_arg(ap, filepos *); |
80 | sprintf(error, "expected no text after paragraph keyword"); |
81 | flags = FILEPOS; |
82 | break; |
83 | case err_badparatype: |
84 | wsp = va_arg(ap, wchar_t *); |
85 | sp = ustrtoa(wsp, auxbuf, sizeof(auxbuf)); |
86 | fpos = *va_arg(ap, filepos *); |
87 | sprintf(error, "command `%.200s' unrecognised at start of" |
88 | " paragraph", sp); |
89 | flags = FILEPOS; |
90 | break; |
91 | case err_badmidcmd: |
92 | wsp = va_arg(ap, wchar_t *); |
93 | sp = ustrtoa(wsp, auxbuf, sizeof(auxbuf)); |
94 | fpos = *va_arg(ap, filepos *); |
95 | sprintf(error, "command `%.200s' unexpected in mid-paragraph", sp); |
96 | flags = FILEPOS; |
97 | break; |
98 | case err_unexbrace: |
99 | fpos = *va_arg(ap, filepos *); |
100 | sprintf(error, "brace character unexpected in mid-paragraph"); |
101 | flags = FILEPOS; |
102 | break; |
103 | case err_explbr: |
104 | fpos = *va_arg(ap, filepos *); |
105 | sprintf(error, "expected `{' after command"); |
106 | flags = FILEPOS; |
107 | break; |
108 | case err_commenteof: |
109 | fpos = *va_arg(ap, filepos *); |
110 | sprintf(error, "end of file unexpected inside `\\#{...}' comment"); |
111 | flags = FILEPOS; |
112 | break; |
113 | case err_kwexprbr: |
114 | fpos = *va_arg(ap, filepos *); |
115 | sprintf(error, "expected `}' after cross-reference"); |
116 | flags = FILEPOS; |
117 | break; |
118 | case err_missingrbrace: |
119 | fpos = *va_arg(ap, filepos *); |
120 | sprintf(error, "unclosed braces at end of paragraph"); |
121 | flags = FILEPOS; |
122 | break; |
7136a6c7 |
123 | case err_missingrbrace2: |
124 | fpos = *va_arg(ap, filepos *); |
125 | sprintf(error, "unclosed braces at end of input file"); |
126 | flags = FILEPOS; |
127 | break; |
d7482997 |
128 | case err_nestedstyles: |
129 | fpos = *va_arg(ap, filepos *); |
130 | sprintf(error, "unable to nest text styles"); |
131 | flags = FILEPOS; |
132 | break; |
133 | case err_nestedindex: |
134 | fpos = *va_arg(ap, filepos *); |
135 | sprintf(error, "unable to nest index markings"); |
136 | flags = FILEPOS; |
137 | break; |
138 | case err_nosuchkw: |
139 | fpos = *va_arg(ap, filepos *); |
140 | wsp = va_arg(ap, wchar_t *); |
141 | sp = ustrtoa(wsp, auxbuf, sizeof(auxbuf)); |
142 | sprintf(error, "unable to resolve cross-reference to `%.200s'", sp); |
143 | flags = FILEPOS; |
144 | break; |
145 | case err_multiBR: |
146 | fpos = *va_arg(ap, filepos *); |
147 | wsp = va_arg(ap, wchar_t *); |
148 | sp = ustrtoa(wsp, auxbuf, sizeof(auxbuf)); |
149 | sprintf(error, "multiple `\\BR' entries given for `%.200s'", sp); |
150 | flags = FILEPOS; |
151 | break; |
152 | case err_nosuchidxtag: |
153 | wsp = va_arg(ap, wchar_t *); |
154 | sp = ustrtoa(wsp, auxbuf, sizeof(auxbuf)); |
155 | sprintf(error, "`\\IM' on unknown index tag `%.200s'", sp); |
156 | flags = 0; |
157 | /* FIXME: need to get a filepos to here somehow */ |
158 | break; |
159 | case err_cantopenw: |
160 | sp = va_arg(ap, char *); |
161 | sprintf(error, "unable to open output file `%.200s'", sp); |
162 | flags = PREFIX; |
163 | break; |
164 | case err_macroexists: |
165 | fpos = *va_arg(ap, filepos *); |
166 | wsp = va_arg(ap, wchar_t *); |
167 | sp = ustrtoa(wsp, auxbuf, sizeof(auxbuf)); |
168 | sprintf(error, "macro `%.200s' already defined", sp); |
169 | flags = FILEPOS; |
170 | break; |
171 | case err_sectjump: |
172 | fpos = *va_arg(ap, filepos *); |
173 | sprintf(error, "expected higher heading levels before this one"); |
174 | flags = FILEPOS; |
175 | break; |
176 | case err_winhelp_ctxclash: |
177 | fpos = *va_arg(ap, filepos *); |
178 | sp = va_arg(ap, char *); |
179 | sp2 = va_arg(ap, char *); |
180 | sprintf(error, "Windows Help context id `%.200s' clashes with " |
181 | "previously defined `%.200s'", sp, sp2); |
182 | flags = FILEPOS; |
183 | break; |
184 | case err_multikw: |
185 | fpos = *va_arg(ap, filepos *); |
186 | fpos2 = *va_arg(ap, filepos *); |
187 | wsp = va_arg(ap, wchar_t *); |
188 | sp = ustrtoa(wsp, auxbuf, sizeof(auxbuf)); |
189 | sprintf(error, "paragraph keyword `%.200s' already defined at ", sp); |
190 | sprintf(error + strlen(error), "%s:%d", fpos2.filename, fpos2.line); |
191 | flags = FILEPOS; |
192 | break; |
7136a6c7 |
193 | case err_misplacedlcont: |
194 | fpos = *va_arg(ap, filepos *); |
195 | sprintf(error, "\\lcont is only expected after a list item"); |
196 | flags = FILEPOS; |
197 | break; |
2614b01d |
198 | case err_sectmarkerinblock: |
7136a6c7 |
199 | fpos = *va_arg(ap, filepos *); |
2614b01d |
200 | sp = va_arg(ap, char *); |
201 | sprintf(error, "section headings are not supported within \\%.100s", |
202 | sp); |
7136a6c7 |
203 | flags = FILEPOS; |
d4c7e130 |
204 | break; |
205 | case err_infodirentry: |
206 | fpos = *va_arg(ap, filepos *); |
207 | sprintf(error, "\\cfg{info-dir-entry} expects at least three" |
208 | " parameters"); |
209 | flags = FILEPOS; |
210 | break; |
f4551933 |
211 | case err_infonodechar: |
212 | fpos = *va_arg(ap, filepos *); |
213 | c = (char)va_arg(ap, int); |
214 | sprintf(error, "info output format does not support '%c' in" |
215 | " node names; removing", c); |
216 | flags = FILEPOS; |
217 | break; |
d7482997 |
218 | case err_whatever: |
219 | sp = va_arg(ap, char *); |
220 | vsprintf(error, sp, ap); |
221 | flags = PREFIX; |
222 | break; |
223 | } |
224 | |
225 | if (flags & PREFIX) |
226 | fputs("halibut: ", stderr); |
227 | if (flags & FILEPOS) { |
6a0b9d08 |
228 | fprintf(stderr, "%s:", fpos.filename); |
229 | if (fpos.line > 0) |
230 | fprintf(stderr, "%d:", fpos.line); |
d7482997 |
231 | if (fpos.col > 0) |
232 | fprintf(stderr, "%d:", fpos.col); |
233 | fputc(' ', stderr); |
234 | } |
235 | fputs(error, stderr); |
236 | fputc('\n', stderr); |
237 | } |
238 | |
239 | void fatal(int code, ...) { |
240 | va_list ap; |
241 | va_start(ap, code); |
242 | do_error(code, ap); |
243 | va_end(ap); |
244 | exit(EXIT_FAILURE); |
245 | } |
246 | |
247 | void error(int code, ...) { |
248 | va_list ap; |
249 | va_start(ap, code); |
250 | do_error(code, ap); |
251 | va_end(ap); |
252 | } |