annotate helpgen/topic.c @ 21:1c9dac05d040

Add lint-style FALLTHROUGH annotations to fallthrough cases. (in the parse engine and thus the output code) Document this, because the old output causes warnings with gcc10.
author David A. Holland
date Mon, 13 Jun 2022 00:04:38 -0400
parents 13d2b8934445
children
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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]; }