/[CvsGraph]/cvsgraph/readconf.c
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Revision 1.3 - (hide annotations)
Thu Feb 14 23:18:10 2002 UTC (15 years, 10 months ago) by bertho
Branch: MAIN
CVS Tags: REL_1_2_0
Changes since 1.2: +11 -3 lines
File MIME type: text/plain
*** empty log message ***
1 bertho 1.1 /*
2     * CvsGraph graphical representation generator of brances and revisions
3     * of a file in cvs/rcs.
4     *
5 bertho 1.3 * Copyright (C) 2001,2002 B. Stultiens
6 bertho 1.1 *
7     * This program is free software; you can redistribute it and/or modify
8     * it under the terms of the GNU General Public License as published by
9     * the Free Software Foundation; either version 2 of the License, or
10     * (at your option) any later version.
11     *
12     * This program is distributed in the hope that it will be useful,
13     * but WITHOUT ANY WARRANTY; without even the implied warranty of
14     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15     * GNU General Public License for more details.
16     *
17     * You should have received a copy of the GNU General Public License
18     * along with this program; if not, write to the Free Software
19     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20     */
21    
22     /*#define DEBUG 1*/
23    
24     #include <stdio.h>
25     #include <stdlib.h>
26     #include <string.h>
27     #include <ctype.h>
28     #include <assert.h>
29    
30     #include <gd.h>
31     #include <gdfontt.h>
32     #include <gdfonts.h>
33     #include <gdfontmb.h>
34     #include <gdfontl.h>
35     #include <gdfontg.h>
36    
37     #include "utils.h"
38     #include "cvsgraph.h"
39     #include "readconf.h"
40    
41     int line_number;
42    
43     typedef struct
44     {
45     char *keyword;
46     int type;
47     union {
48     void *v; /* join of other values */
49     int *i;
50     font_t *f;
51     char **s;
52     color_t *c;
53 bertho 1.2 double *d;
54 bertho 1.1 int val; /* FIXME: Oops, sizeof(int) must be sizeof(void *) */
55     } confref;
56     } keyword_t;
57    
58     typedef union {
59     keyword_t *kw;
60     int i;
61 bertho 1.2 double d;
62 bertho 1.1 char *str;
63     } YYSTYPE;
64    
65     static YYSTYPE yylval;
66    
67     static int nstacked_opts;
68     static char **stacked_opts;
69    
70     enum {
71     TYPE_dummy = 256,
72     TYPE_KEYWORD,
73     TYPE_NUMBER,
74     TYPE_VALUE,
75     TYPE_BOOLEAN,
76     TYPE_COLOR,
77     TYPE_FONT,
78 bertho 1.2 TYPE_STRING,
79     TYPE_DOUBLE
80 bertho 1.1 };
81    
82     static keyword_t keywords[] = {
83     { "branch_bgcolor", TYPE_COLOR, { &conf.branch_bgcolor } },
84     { "branch_bspace", TYPE_NUMBER, { &conf.branch_bspace } },
85     { "branch_color", TYPE_COLOR, { &conf.branch_color } },
86 bertho 1.2 { "branch_font", TYPE_FONT, { &conf.branch_font.gdfont } },
87     { "branch_ttfont", TYPE_STRING, { &conf.branch_font.ttfont } },
88     { "branch_ttsize", TYPE_DOUBLE, { &conf.branch_font.ttsize } },
89     { "branch_tag_color", TYPE_COLOR, { &conf.branch_tag_color } },
90     { "branch_tag_font", TYPE_FONT, { &conf.branch_tag_font.gdfont } },
91     { "branch_tag_ttfont", TYPE_STRING, { &conf.branch_tag_font.ttfont } },
92     { "branch_tag_ttsize", TYPE_DOUBLE, { &conf.branch_tag_font.ttsize } },
93 bertho 1.1 { "branch_lspace", TYPE_NUMBER, { &conf.branch_lspace } },
94     { "branch_rspace", TYPE_NUMBER, { &conf.branch_rspace } },
95     { "branch_tspace", TYPE_NUMBER, { &conf.branch_tspace } },
96     { "branch_connect", TYPE_NUMBER, { &conf.branch_connect } },
97     { "branch_margin", TYPE_NUMBER, { &conf.branch_margin } },
98     { "branch_dupbox", TYPE_BOOLEAN, { &conf.branch_dupbox } },
99     { "upside_down", TYPE_BOOLEAN, { &conf.upside_down } },
100 bertho 1.2 { "auto_stretch", TYPE_BOOLEAN, { &conf.auto_stretch } },
101 bertho 1.1 { "color_bg", TYPE_COLOR, { &conf.color_bg } },
102 bertho 1.2 { "transparent_bg", TYPE_BOOLEAN, { &conf.transparent_bg } },
103 bertho 1.1 { "cvsmodule", TYPE_STRING, { &conf.cvsmodule } },
104     { "cvsroot", TYPE_STRING, { &conf.cvsroot } },
105     { "date_format", TYPE_STRING, { &conf.date_format } },
106     { "box_shadow", TYPE_BOOLEAN, { &conf.box_shadow } },
107     { "strip_untagged", TYPE_BOOLEAN, { &conf.strip_untagged } },
108     { "strip_first_rev", TYPE_BOOLEAN, { &conf.strip_first_rev } },
109 bertho 1.2 { "anti_alias", TYPE_BOOLEAN, { &conf.anti_alias } },
110     { "use_ttf", TYPE_BOOLEAN, { &conf.use_ttf } },
111 bertho 1.3 { "thick_lines", TYPE_NUMBER, { &conf.thick_lines } },
112 bertho 1.1 { "rev_color", TYPE_COLOR, { &conf.rev_color } },
113     { "rev_bgcolor", TYPE_COLOR, { &conf.rev_bgcolor } },
114 bertho 1.2 { "rev_font", TYPE_FONT, { &conf.rev_font.gdfont } },
115     { "rev_ttfont", TYPE_STRING, { &conf.rev_font.ttfont } },
116     { "rev_ttsize", TYPE_DOUBLE, { &conf.rev_font.ttsize } },
117 bertho 1.1 { "rev_separator", TYPE_NUMBER, { &conf.rev_separator } },
118     { "rev_minline", TYPE_NUMBER, { &conf.rev_minline } },
119     { "rev_maxline", TYPE_NUMBER, { &conf.rev_maxline } },
120     { "rev_lspace", TYPE_NUMBER, { &conf.rev_lspace } },
121     { "rev_rspace", TYPE_NUMBER, { &conf.rev_rspace } },
122     { "rev_tspace", TYPE_NUMBER, { &conf.rev_tspace } },
123     { "rev_bspace", TYPE_NUMBER, { &conf.rev_bspace } },
124     { "rev_text", TYPE_STRING, { &conf.rev_text } },
125     { "rev_text_color", TYPE_COLOR, { &conf.rev_text_color } },
126 bertho 1.2 { "rev_text_font", TYPE_FONT, { &conf.rev_text_font.gdfont } },
127     { "rev_text_ttfont", TYPE_STRING, { &conf.rev_text_font.ttfont } },
128     { "rev_text_ttsize", TYPE_DOUBLE, { &conf.rev_text_font.ttsize } },
129 bertho 1.1 { "tag_color", TYPE_COLOR, { &conf.tag_color } },
130 bertho 1.2 { "tag_font", TYPE_FONT, { &conf.tag_font.gdfont } },
131     { "tag_ttfont", TYPE_STRING, { &conf.tag_font.ttfont } },
132     { "tag_ttsize", TYPE_DOUBLE, { &conf.tag_font.ttsize } },
133 bertho 1.1 { "title", TYPE_STRING, { &conf.title } },
134     { "title_x", TYPE_NUMBER, { &conf.title_x } },
135     { "title_y", TYPE_NUMBER, { &conf.title_y } },
136 bertho 1.2 { "title_font", TYPE_FONT, { &conf.title_font.gdfont } },
137     { "title_ttfont", TYPE_STRING, { &conf.title_font.ttfont } },
138     { "title_ttsize", TYPE_DOUBLE, { &conf.title_font.ttsize } },
139 bertho 1.1 { "title_align", TYPE_NUMBER, { &conf.title_align } },
140     { "title_color", TYPE_COLOR, { &conf.title_color } },
141     { "margin_top", TYPE_NUMBER, { &conf.margin_top } },
142     { "margin_bottom", TYPE_NUMBER, { &conf.margin_bottom } },
143     { "margin_left", TYPE_NUMBER, { &conf.margin_left } },
144     { "margin_right", TYPE_NUMBER, { &conf.margin_right } },
145     { "image_type", TYPE_NUMBER, { &conf.image_type } },
146     { "image_quality", TYPE_NUMBER, { &conf.image_quality } },
147     { "map_name", TYPE_STRING, { &conf.map_name } },
148     { "map_branch_href", TYPE_STRING, { &conf.map_branch_href } },
149     { "map_branch_alt", TYPE_STRING, { &conf.map_branch_alt } },
150     { "map_rev_href", TYPE_STRING, { &conf.map_rev_href } },
151     { "map_rev_alt", TYPE_STRING, { &conf.map_rev_alt } },
152     { "map_diff_href", TYPE_STRING, { &conf.map_diff_href } },
153     { "map_diff_alt", TYPE_STRING, { &conf.map_diff_alt } },
154     { "jpeg", TYPE_VALUE, { (void *)IMAGE_JPEG } },
155     { "png", TYPE_VALUE, { (void *)IMAGE_PNG } },
156     { "gif", TYPE_VALUE, { (void *)IMAGE_GIF } },
157     { "true", TYPE_VALUE, { (void *)1 } },
158     { "false", TYPE_VALUE, { (void *)0 } },
159 bertho 1.3 { "not", TYPE_VALUE, { (void *)-1 } },
160 bertho 1.1 { "left", TYPE_VALUE, { (void *)0 } },
161     { "center", TYPE_VALUE, { (void *)1 } },
162     { "right", TYPE_VALUE, { (void *)2 } },
163     { "tiny", TYPE_VALUE, { (void *)0 } },
164     { "small", TYPE_VALUE, { (void *)1 } },
165     { "medium", TYPE_VALUE, { (void *)2 } },
166     { "large", TYPE_VALUE, { (void *)3 } },
167     { "giant", TYPE_VALUE, { (void *)4 } },
168     };
169    
170     #define NKEYWORDS (sizeof(keywords) / sizeof(keywords[0]))
171    
172     static int cmp_kw(const void *k1, const void *k2)
173     {
174     return strcmp(((keyword_t *)k1)->keyword, ((keyword_t *)k2)->keyword);
175     }
176    
177     /*
178     **************************************************************************
179     * Debug routines
180     **************************************************************************
181     */
182     #ifdef DEBUG
183     #define DEBUGSTREAM stdout
184     static void debug_pname(const char *n)
185     {
186     fprintf(DEBUGSTREAM, "%-16s: ", n);
187     }
188    
189     static void debug_pstring(const char *n, const char *a)
190     {
191     debug_pname(n);
192     if(!a)
193     fprintf(DEBUGSTREAM, "<not-set>\n");
194     else
195     {
196     fputc('\'', DEBUGSTREAM);
197     for(; *a; a++)
198     {
199     if(isprint(*a))
200     fputc(*a, DEBUGSTREAM);
201     else
202     {
203     fputc('\\', DEBUGSTREAM);
204     switch(*a)
205     {
206     case '\a': fputc('a', DEBUGSTREAM); break;
207     case '\b': fputc('b', DEBUGSTREAM); break;
208     case '\f': fputc('f', DEBUGSTREAM); break;
209     case '\n': fputc('n', DEBUGSTREAM); break;
210     case '\r': fputc('r', DEBUGSTREAM); break;
211     case '\t': fputc('t', DEBUGSTREAM); break;
212     case '\v': fputc('v', DEBUGSTREAM); break;
213     default:
214     fprintf(DEBUGSTREAM, "x%02x", (unsigned char)*a);
215     }
216     }
217     }
218     fprintf(DEBUGSTREAM, "'\n");
219     }
220     }
221    
222     static void debug_pbool(const char *n, int b)
223     {
224     debug_pname(n);
225     fprintf(DEBUGSTREAM, "%s\n", b ? "true" : "false");
226     }
227    
228     static void debug_pint(const char *n, int i)
229     {
230     debug_pname(n);
231     fprintf(DEBUGSTREAM, "%i\n", i);
232     }
233    
234 bertho 1.2 static void debug_pdouble(const char *n, double d)
235     {
236     debug_pname(n);
237     fprintf(DEBUGSTREAM, "%g\n", d);
238     }
239    
240     static void debug_pfont(const char *n, gdFontPtr f)
241 bertho 1.1 {
242     const char *s = "<Unknown font>";
243     debug_pname(n);
244     if(f == gdFontTiny)
245     s = "gdFontTiny";
246     else if(f == gdFontSmall)
247     s = "gdFontSmall";
248     else if(f == gdFontMediumBold)
249     s = "gdFontMediumBold";
250     else if(f == gdFontLarge)
251     s = "gdFontLarge";
252     else if(f == gdFontGiant)
253     s = "gdFontGiant";
254     fprintf(DEBUGSTREAM, "%s\n", s);
255     }
256    
257     static void debug_pcolor(const char *n, color_t *c)
258     {
259     debug_pname(n);
260     fprintf(DEBUGSTREAM, "#%02x%02x%02x\n", c->r, c->g, c->b);
261     }
262    
263     void dump_config(void)
264     {
265     debug_pstring("cvsroot", conf.cvsroot);
266     debug_pstring("cvsmodule", conf.cvsmodule);
267     debug_pstring("date_format", conf.date_format);
268    
269     debug_pcolor("color_bg", &conf.color_bg);
270     debug_pbool("box_shadow", conf.box_shadow);
271     debug_pbool("upside_down", conf.upside_down);
272     debug_pbool("strip_untagged", conf.strip_untagged);
273     debug_pbool("strip_first_rev", conf.strip_first_rev);
274 bertho 1.3 debug_pbool("auto_stretch", conf.auto_stretch);
275     debug_pbool("anti_alias", conf.anti_alias);
276     debug_pbool("use_ttf", conf.use_ttf);
277     debug_pint("thick_lines", conf.thick_lines);
278 bertho 1.1
279 bertho 1.2 debug_pfont("tag_font", conf.tag_font.gdfont);
280     debug_pstring("tag_ttfont", conf.tag_font.ttfont);
281     debug_psouble("tag_ttsize", conf.tag_font.ttsize);
282 bertho 1.1 debug_pcolor("tag_color", &conf.tag_color);
283    
284 bertho 1.2 debug_pfont("rev_font", conf.rev_font.gdfont);
285     debug_pstring("rev_ttfont", conf.rev_font.ttfont);
286     debug_pdouble("rev_ttsize", conf.rev_font.ttsize);
287 bertho 1.1 debug_pcolor("rev_color", &conf.rev_color);
288     debug_pcolor("rev_bgcolor", &conf.rev_bgcolor);
289     debug_pint("rev_separator", conf.rev_separator);
290     debug_pint("rev_minline", conf.rev_minline);
291     debug_pint("rev_maxline", conf.rev_maxline);
292     debug_pint("rev_lspace", conf.rev_lspace);
293     debug_pint("rev_rspace", conf.rev_rspace);
294     debug_pint("rev_tspace", conf.rev_tspace);
295     debug_pint("rev_bspace", conf.rev_bspace);
296     debug_pstring("rev_text", conf.rev_text);
297     debug_pcolor("rev_text_color", &conf.rev_text_color);
298 bertho 1.2 debug_pfont("rev_text_font", conf.rev_text_font.gdfont);
299     debug_pstring("rev_text_ttfont", conf.rev_text_font.ttfont);
300     debug_pdouble("rev_text_ttsize", conf.rev_text_font.ttsize);
301    
302     debug_pfont("branch_font", conf.branch_font.gdfont);
303     debug_pstring("branch_ttfont", conf.branch_font.ttfont);
304     debug_pdouble("branch_ttsize", conf.branch_font.ttsize);
305 bertho 1.1 debug_pcolor("branch_color", &conf.branch_color);
306 bertho 1.2 debug_pfont("branch_tag_font", conf.branch_tag_font.gdfont);
307     debug_pstring("branch_tag_ttfont", conf.branch_tag_font.ttfont);
308     debug_pdouble("branch_tag_ttsize", conf.branch_tag_font.ttsize);
309     debug_pcolor("branch_tag_color", &conf.branch_tag_color);
310 bertho 1.1 debug_pcolor("branch_bgcolor", &conf.branch_bgcolor);
311     debug_pint("branch_lspace", conf.branch_lspace);
312     debug_pint("branch_rspace", conf.branch_rspace);
313     debug_pint("branch_tspace", conf.branch_tspace);
314     debug_pint("branch_bspace", conf.branch_bspace);
315     debug_pint("branch_connect", conf.branch_connect);
316     debug_pint("branch_margin", conf.branch_margin);
317     debug_pint("branch_dupbox", conf.branch_dupbox);
318    
319     debug_pstring("title", conf.title);
320     debug_pint("title_x", conf.title_x);
321     debug_pint("title_y", conf.title_y);
322 bertho 1.2 debug_pfont("title_font", conf.title_font.gdfont);
323     debug_pstring("title_ttfont", conf.title_font.ttfont);
324     debug_pdouble("title_ttsize", conf.title_font.ttsize);
325 bertho 1.1 debug_pint("title_align", conf.title_align);
326     debug_pcolor("title_color", &conf.title_color);
327    
328     debug_pint("margin_top", conf.margin_top);
329     debug_pint("margin_bottom", conf.margin_bottom);
330     debug_pint("margin_left", conf.margin_left);
331     debug_pint("margin_right", conf.margin_right);
332    
333     debug_pint("image_type", conf.image_type);
334     debug_pint("image_quality", conf.image_quality);
335    
336     debug_pstring("map_name", conf.map_name);
337     debug_pstring("map_branch_href", conf.map_branch_href);
338     debug_pstring("map_branch_alt", conf.map_branch_alt);
339     debug_pstring("map_rev_href", conf.map_rev_href);
340     debug_pstring("map_rev_alt", conf.map_rev_alt);
341     debug_pstring("map_diff_href", conf.map_diff_href);
342     debug_pstring("map_diff_alt", conf.map_diff_alt);
343    
344     debug_pstring("expand[0]", conf.expand[0]);
345     debug_pstring("expand[1]", conf.expand[1]);
346     debug_pstring("expand[2]", conf.expand[2]);
347     debug_pstring("expand[3]", conf.expand[3]);
348     debug_pstring("expand[4]", conf.expand[4]);
349     debug_pstring("expand[5]", conf.expand[5]);
350     debug_pstring("expand[6]", conf.expand[6]);
351     debug_pstring("expand[7]", conf.expand[7]);
352     debug_pstring("expand[8]", conf.expand[8]);
353     debug_pstring("expand[9]", conf.expand[9]);
354     }
355     #endif
356    
357     /*
358     **************************************************************************
359     * String collection routines
360     **************************************************************************
361     */
362     #define STRALLOCSIZE 128
363     static char *str;
364     static int nstr;
365     static int nastr;
366    
367     static void reset_str(void)
368     {
369     nstr = 0;
370     }
371    
372     static void add_str(int c)
373     {
374     if(nstr + 1 + 1 > nastr)
375     {
376     str = xrealloc(str, nastr+STRALLOCSIZE);
377     nastr += STRALLOCSIZE;
378     }
379     str[nstr++] = c;
380     }
381    
382     static char *get_str(void)
383     {
384     if(!str)
385     return xstrdup("");
386    
387     str[nstr] = '\0';
388     return xstrdup(str);
389     }
390    
391     /*
392     **************************************************************************
393     * Input routines
394     **************************************************************************
395     */
396     static char *buf = NULL;
397     static int bufsize = 0;
398     static int bufalloc = 0;
399     static int bufpos = 0;
400     static int bufunput = -1;
401     static FILE *buffp;
402    
403     static void set_input(FILE *fp, char *s)
404     {
405     assert((fp == NULL && s != NULL) || (fp != NULL && s == NULL));
406     buffp = fp;
407     bufsize = bufpos = 0;
408     if(s)
409     {
410     if(!buf)
411     {
412     bufalloc = 8192;
413     buf = xmalloc(bufalloc * sizeof(*buf));
414     }
415     bufsize = strlen(s);
416     assert(bufsize < bufalloc);
417     strcpy(buf, s);
418     }
419     }
420    
421     static int get_input(void)
422     {
423     if(bufunput != -1)
424     {
425     int c = bufunput;
426     bufunput = -1;
427     return c;
428     }
429    
430     if(bufpos < bufsize)
431     {
432     assert(buf != NULL);
433     retry_input:
434     return (int)((unsigned char)buf[bufpos++]);
435     }
436    
437     if(!buf)
438     {
439     bufalloc = 8192;
440     buf = xmalloc(bufalloc * sizeof(*buf));
441     bufsize = bufpos = 0;
442     }
443     if(buffp)
444     {
445     bufsize = fread(buf, 1, bufalloc, buffp);
446     bufpos = 0;
447     if(!bufsize)
448     return EOF;
449     goto retry_input;
450     }
451     return EOF;
452     }
453    
454     static void unget_input(int c)
455     {
456     bufunput = c;
457     }
458    
459     /*
460     **************************************************************************
461     * Lexical scanner
462     **************************************************************************
463     */
464     static int config_lex(void)
465     {
466     int ch;
467     while(1)
468     {
469     ch = get_input();
470     if(ch == '\n')
471     line_number++;
472    
473     if(isspace(ch))
474     continue;
475    
476     switch(ch)
477     {
478     case EOF:
479     case '=':
480     case ';':
481     return ch;
482    
483     case '#': /* Comment */
484     while((ch = get_input()) != '\n' && ch != EOF)
485     ;
486     if(ch != EOF)
487     unget_input(ch);
488     break;
489    
490     case '"':
491     reset_str();
492     while(1)
493     {
494     char c[4];
495     ch = get_input();
496     switch(ch)
497     {
498     case '\\': /* Start an escape sequence */
499     switch(ch = get_input())
500     {
501     default: /* This includes '\\', '"' and embedded newlines */
502     add_str(ch);
503     break;
504     case 'a': add_str('\a'); break;
505     case 'b': add_str('\b'); break;
506     case 'f': add_str('\f'); break;
507     case 'n': add_str('\n'); break;
508     case 'r': add_str('\r'); break;
509     case 't': add_str('\t'); break;
510     case 'v': add_str('\v'); break;
511     case 'x':
512     case 'X': /* Hex escape */
513     c[0] = get_input();
514     c[1] = get_input();
515     c[2] = '\0';
516     if(!isxdigit(c[0]) || !isxdigit(c[1]))
517     yyerror("Invalid hex escape");
518     add_str((int)strtol(c, NULL, 16));
519     break;
520     case '0':
521     case '1':
522     case '2': /* Octal escape */
523     c[0] = ch;
524     c[1] = c[2] = c[3] = '\0';
525     if((ch = get_input()) >= '0' && ch <= '7')
526     c[1] = ch;
527     else
528     unget_input(ch);
529     if((ch = get_input()) >= '0' && ch <= '7')
530     c[2] = ch;
531     else
532     unget_input(ch);
533     add_str((int)strtol(c, NULL, 8));
534     break;
535     case EOF:
536     yyerror("Unexpected EOF in escape");
537     break;
538     }
539     break;
540     case '"':
541     yylval.str = get_str();
542     return TYPE_STRING;
543     case '\n':
544     yyerror("Newline in string");
545     break;
546     case EOF:
547     yyerror("Unexpected EOF in string");
548     break;
549     default:
550     add_str(ch);
551     break;
552     }
553     }
554     break;
555    
556     default:
557     if(isalpha(ch) || ch == '_')
558     {
559     keyword_t skw;
560     keyword_t *kw;
561     /* Collect keyword */
562     reset_str();
563     add_str(ch);
564     while(1)
565     {
566     ch = get_input();
567     if(isalpha(ch) || ch == '_')
568     add_str(ch);
569     else
570     {
571     unget_input(ch);
572     break;
573     }
574     }
575     skw.keyword = get_str();
576     kw = bsearch(&skw, keywords, NKEYWORDS, sizeof(keywords[0]), cmp_kw);
577     if(!kw)
578     yyerror("Unknown keyword '%s'", skw.keyword);
579     xfree(skw.keyword);
580     if(kw->type == TYPE_VALUE)
581     {
582     yylval.i = kw->confref.val;
583     return TYPE_NUMBER;
584     }
585     yylval.kw = kw;
586     return TYPE_KEYWORD;
587     }
588     else if(isdigit(ch) || ch == '+' || ch == '-')
589     {
590     char *s;
591     char *eptr;
592 bertho 1.2 int type = TYPE_NUMBER;
593 bertho 1.1 /* Collect number */
594     reset_str();
595     add_str(ch);
596     while(1)
597     {
598     ch = get_input();
599 bertho 1.2 if(isxdigit(ch) || ch == 'x' || ch == 'X' || ch == '.') /* Not exact, but close enough */
600 bertho 1.1 add_str(ch);
601     else
602     {
603     unget_input(ch);
604     break;
605     }
606 bertho 1.2 if(ch == '.')
607     type = TYPE_DOUBLE;
608 bertho 1.1 }
609     s = get_str();
610 bertho 1.2 if(type == TYPE_DOUBLE)
611     {
612     yylval.d = strtod(s, &eptr);
613     if(*eptr)
614     yyerror("Invalid floating point number");
615     }
616     else
617     {
618     yylval.i = strtol(s, &eptr, 0);
619     if(*eptr)
620     yyerror("Invalid number");
621     }
622 bertho 1.1 xfree(s);
623 bertho 1.2 return type;
624 bertho 1.1 }
625     else
626     yyerror("Unmatched text '%c' (0x%02x)", isprint(ch) ? ch : ' ', ch);
627     break;
628     }
629     }
630     }
631    
632     static void set_color(color_t *c, char *s)
633     {
634     char *cptr;
635     if(*s != '#' || strlen(s) != 7)
636     {
637     colorerror:
638     yyerror("Invalid color value");
639     }
640     c->b = strtol(s+5, &cptr, 16);
641     if(*cptr)
642     goto colorerror;
643     s[5] = '\0';
644     c->g = strtol(s+3, &cptr, 16);
645     if(*cptr)
646     goto colorerror;
647     s[3] = '\0';
648     c->r = strtol(s+1, &cptr, 16);
649     if(*cptr)
650     goto colorerror;
651     }
652    
653     static gdFontPtr get_font(int id)
654     {
655     switch(id)
656     {
657     case 0: return gdFontTiny;
658     case 1: return gdFontSmall;
659     default:
660     case 2: return gdFontMediumBold;
661     case 3: return gdFontLarge;
662     case 4: return gdFontGiant;
663     }
664     }
665    
666     /*
667     **************************************************************************
668     * The config parser
669     * Grammar:
670     * file : <Empty>
671     * | lines
672     * ;
673     *
674     * lines : line
675     * | lines line
676     * ;
677     *
678     * line : <keyword> '=' <value> ';'
679     * | ';'
680     * ;
681     **************************************************************************
682     */
683     static void config_parse(void)
684     {
685     int state = 0;
686     int token;
687     int t;
688     keyword_t *kw = NULL;
689    
690     while(1)
691     {
692     token = config_lex();
693     if(token == EOF)
694     {
695     if(state)
696     yyerror("Unexpected EOF");
697     break;
698     }
699    
700     switch(state)
701     {
702     case 0:
703     if(token == TYPE_KEYWORD)
704     {
705     kw = yylval.kw;
706     state = 1;
707     }
708     else if(token != ';')
709     yyerror("Keyword expected");
710     break;
711     case 1:
712     if(token != '=')
713     yyerror("'=' expected");
714     state = 2;
715     break;
716     case 2:
717     if(kw->type == TYPE_FONT || kw->type == TYPE_BOOLEAN)
718     t = TYPE_NUMBER;
719     else if(kw->type == TYPE_COLOR)
720     t = TYPE_STRING;
721     else
722     t = kw->type;
723 bertho 1.2
724     if(token == TYPE_NUMBER && kw->type == TYPE_DOUBLE)
725     {
726     /* Auto promote numbers to doubles if required */
727     yylval.d = (double)yylval.i;
728     token = TYPE_DOUBLE;
729     }
730    
731 bertho 1.1 if(token != t)
732     {
733     char *e;
734     switch(kw->type)
735     {
736     case TYPE_STRING: e = "String"; break;
737     case TYPE_NUMBER: e = "Number"; break;
738     case TYPE_COLOR: e = "Color"; break;
739     case TYPE_FONT: e = "Font"; break;
740     case TYPE_BOOLEAN: e = "Boolean"; break;
741 bertho 1.2 case TYPE_DOUBLE: e = "Double"; break;
742 bertho 1.1 default: e = "Internal error: Unknown type"; break;
743     }
744     yyerror("%s expected", e);
745     }
746     #ifdef DEBUG
747     printf("processing: '%s'\n", kw->keyword);
748     #endif
749     switch(kw->type)
750     {
751     case TYPE_STRING:
752     *kw->confref.s = yylval.str;
753     break;
754     case TYPE_NUMBER:
755     *kw->confref.i = yylval.i;
756     break;
757     case TYPE_BOOLEAN:
758 bertho 1.3 if(yylval.i == -1)
759     *kw->confref.i = !*kw->confref.i;
760     else
761     *kw->confref.i = yylval.i != 0;
762 bertho 1.1 break;
763     case TYPE_COLOR:
764     set_color(kw->confref.c, yylval.str);
765     break;
766     case TYPE_FONT:
767 bertho 1.2 kw->confref.f->gdfont = get_font(yylval.i);
768     break;
769     case TYPE_DOUBLE:
770     *kw->confref.d = yylval.d;
771 bertho 1.1 break;
772     default:
773     yyerror("Internal error: Unknown type passed %d", kw->type);
774     break;
775     }
776     state = 3;
777     break;
778     case 3:
779     if(token != ';')
780     yyerror("';' expected");
781     state = 0;
782     break;
783     default:
784     yyerror("Internal error: invalid state %d", state);
785     break;
786     }
787     }
788     }
789    
790     /*
791     **************************************************************************
792     * Configuration
793     **************************************************************************
794     */
795     void stack_option(const char *opt)
796     {
797     stacked_opts = xrealloc(stacked_opts, sizeof(*stacked_opts) * (nstacked_opts + 1));
798     stacked_opts[nstacked_opts] = xmalloc(strlen(opt) + 2);
799     strcpy(stacked_opts[nstacked_opts], opt);
800     strcat(stacked_opts[nstacked_opts], ";");
801     nstacked_opts++;
802     #ifdef DEBUG
803     printf("stacking option: '%s'\n", stacked_opts[nstacked_opts-1]);
804     #endif
805     }
806    
807     void read_config(const char *path)
808     {
809     FILE *fp;
810    
811     /* Make sure we have them sorted for bsearch */
812     qsort(keywords, NKEYWORDS, sizeof(keywords[0]), cmp_kw);
813    
814     if(path)
815     {
816     if((fp = fopen(path, "r")) != NULL)
817     input_file = path;
818     }
819     else
820     {
821     if((fp = fopen("./" CONFFILENAME, "r")) == NULL)
822     {
823     if((fp = fopen(ETCDIR "/" CONFFILENAME, "r")) != NULL)
824     input_file = ETCDIR "/" CONFFILENAME;
825     }
826     else
827     input_file = "./" CONFFILENAME;
828     }
829    
830     if(fp)
831     {
832     line_number = 1;
833     set_input(fp, NULL);
834     config_parse();
835     fclose(fp);
836     input_file = NULL;
837     }
838    
839     if(nstacked_opts)
840     {
841     int i;
842     for(i = 0; i < nstacked_opts; i++)
843     {
844     line_number = 0;
845     set_input(NULL, stacked_opts[i]);
846     input_file = stacked_opts[i];
847     #ifdef DEBUG
848     printf("parsing stacked option: '%s'\n", stacked_opts[i]);
849     #endif
850     config_parse();
851     }
852     input_file = NULL;
853     }
854     #ifdef DEBUG
855     dump_config();
856     #endif
857     }
858    

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