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annotate helpgen/topic.c @ 4:bebb2ba69e1d

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maybe help with getting tex to fail properly on error
author David A. Holland
date Sat, 18 Apr 2020 17:12:17 -0400
parents 13d2b8934445
children
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13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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1 #include <assert.h>
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2 #include <stdio.h>
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3 #include <stdlib.h>
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4 #include <string.h>
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5
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6 #include "utils.h"
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7 #include "topic.h"
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8
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9 #define MAXTITLES 16
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10 #define MAXREFS 64
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11
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12 struct topic {
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13 char *titles[MAXTITLES];
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14 int numtitles;
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15 char *refs[MAXREFS];
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16 int numrefs;
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17 char *body;
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18 };
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19
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20 struct topic *topic_create(void) {
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21 struct topic *t = domalloc(sizeof(struct topic));
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22 t->numtitles = 0;
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23 t->numrefs = 0;
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24 t->body = NULL;
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25 return t;
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26 }
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27
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28 void topic_destroy(struct topic *t) {
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29 int i;
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30 for (i=0; i<t->numtitles; i++) {
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31 free(t->titles[i]);
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32 }
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33 for (i=0; i<t->numrefs; i++) {
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34 free(t->refs[i]);
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35 }
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36 if (t->body) {
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37 free(t->body);
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38 }
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39 free(t);
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40 }
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41
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42 void topic_addtitle(struct topic *t, const char *s) {
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43 if (t->numtitles >= MAXTITLES) {
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44 fprintf(stderr, "Too many titles (increase MAXTITLES) at %s\n", s);
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45 exit(1);
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46 }
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47 t->titles[t->numtitles++] = dostrdup(s);
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48 }
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49
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50 void topic_addref(struct topic *t, const char *s) {
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51 if (t->numrefs >= MAXREFS) {
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52 fprintf(stderr, "Too many refs (increase MAXREFS) at %s\n", s);
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53 exit(1);
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54 }
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55 t->refs[t->numrefs++] = dostrdup(s);
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56 }
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57
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58 void topic_setbody(struct topic *t, const char *buf, size_t len) {
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59 size_t i, j, reallen = 0;
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60
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61 for (i=0; i<len; i++) {
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62 if (buf[i] != '\r') {
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63 reallen++;
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64 }
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65 }
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66
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67 char *text = domalloc(reallen+1);
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68 for (i=j=0; i<len; i++) {
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69 if (buf[i] != '\r') {
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70 text[j++] = buf[i];
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71 }
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72 }
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73 assert(j==reallen);
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74 text[reallen] = 0;
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75
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76 t->body = text;
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77 }
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78
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79 const char *topic_getbody(struct topic *t) { return t->body; }
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80 int topic_getnumtitles(struct topic *t) { return t->numtitles; }
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81 const char *topic_gettitle(struct topic *t, int ix) { return t->titles[ix]; }
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82 int topic_getnumrefs(struct topic *t) { return t->numrefs; }
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83 const char *topic_getref(struct topic *t, int ix) { return t->refs[ix]; }