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annotate helpgen/cout.c @ 13:43d8b194fb4e

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Remove unused variables.
author David A. Holland
date Tue, 31 May 2022 00:59:00 -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 "topic.h"
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7 #include "helpgen.h"
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8
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9 static void dumpstring(FILE *f, const char *s, int multiline) {
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10 int column = 0;
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11 unsigned char ch;
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12
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13 while (*s) {
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14 if (column == 0) {
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15 if (multiline) fprintf(f, " ");
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16 fprintf(f, "\"");
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17 }
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18 ch = *s++;
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19
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20 if (ch >= 32 && ch < 127 && ch != '"' && ch != '\\') {
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21 fprintf(f, "%c", ch);
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22 column++;
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23 }
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24 else if (ch == '\n') {
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25 fprintf(f, "\\n");
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26 column += 2;
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27 }
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28 else {
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29 assert(ch != '\r');
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30 fprintf(f, "\\%03o", ch);
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31 column += 4;
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32 }
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33
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34 if (multiline && column > 72) {
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35 fprintf(f, "\"\n");
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36 column = 0;
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37 }
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38 }
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39
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40 if (column) {
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41 fprintf(f, "\"");
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42 if (multiline) fprintf(f, "\n");
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43 }
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44 }
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45
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46 static void fcout(FILE *f, struct topic **topics, int ntopics) {
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47 int i, j, n;
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48 unsigned numentries = 0;
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49
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50 fprintf(f, "/* Automatically generated - do not edit */\n\n");
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51
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52 fprintf(f, "struct HelpTopic {\n");
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53 fprintf(f, " const char *title;\n");
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54 fprintf(f, " const char *body;\n");
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55 fprintf(f, "};\n\n");
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56
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57
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58 for (i=0; i<ntopics; i++) {
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59 struct topic *t = topics[i];
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60 const char *title = topic_gettitle(t, 0);
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61 const char *body = topic_getbody(t);
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62
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63 if (!body) body = "";
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64
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65 fprintf(f, "static const char body_%d[] = \n", i);
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66 dumpstring(f, body, 1 /* multiline */);
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67 fprintf(f, ";\n");
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68
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69 fprintf(f, "static const HelpTopic topic_%d = \n { ", i);
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70 dumpstring(f, title, 0 /* not multiline */);
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71 fprintf(f, ", body_%d };\n\n", i);
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72 }
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73
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74
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75 fprintf(f, "static const char *topiclist[] = {\n");
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76 for (i=0; i<ntopics; i++) {
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77 struct topic *t = topics[i];
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78 const char *title = topic_gettitle(t, 0);
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79
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80 fprintf(f, " ");
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81 dumpstring(f, title, 0 /* not multiline */);
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82 fprintf(f, ",\n");
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83 }
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84 fprintf(f, "};\n");
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85 fprintf(f, "static const unsigned numtopiclist = %d;\n\n", ntopics);
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86
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87
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88 fprintf(f, "struct helpentry {\n");
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89 fprintf(f, " const char *topic;\n");
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90 fprintf(f, " const HelpTopic *data;\n");
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91 fprintf(f, "};\n\n");
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92
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93 fprintf(f, "static helpentry helptable[] = {\n");
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94 for (i=0; i<ntopics; i++) {
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95 struct topic *t = topics[i];
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96
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97 n = topic_getnumtitles(t);
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98 for (j=0; j<n; j++) {
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99 fprintf(f, "{ ");
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100 dumpstring(f, topic_gettitle(t, j), 0 /* not multiline */);
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101 fprintf(f, ", &topic_%d },\n", i);
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102 numentries++;
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103 }
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104 }
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105 fprintf(f, "};\n");
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106 fprintf(f, "static const unsigned helptablenum = %u;\n\n", numentries);
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107 }
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108
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109 void cout(const char *file, struct topic **topics, int ntopics) {
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110 FILE *f;
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111
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112 f = fopen(file, "w");
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113 if (!f) {
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114 fprintf(stderr, "%s: fopen failed", file);
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115 exit(1);
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116 }
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117
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118 fcout(f, topics, ntopics);
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119
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120 if (ferror(f)) {
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121 fprintf(stderr, "%s: write error", file);
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122 exit(1);
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123 }
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124 if (fclose(f)) {
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125 fprintf(stderr, "%s: fclose failed", file);
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126 exit(1);
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127 }
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128 }