FreeCalypso > hg > fc-magnetite

annotate helpers/cfg-hdr-gen.c @ 445:399f3a5a5450

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src/ui3/mfw/mfw_cb.c: fix for !GPRS
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 22 Jan 2018 05:45:26 +0000
parents b8b08c302ace
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
388
b8b08c302ace cfg-hdr-gen C helper program written
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * This helper program generates the set of *.cfg header files, based on a
b8b08c302ace cfg-hdr-gen C helper program written
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3 * template file and environment variables for the non-constant settings.
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4 */
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5
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <unistd.h>
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9 #include <ctype.h>
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10 #include <string.h>
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11 #include <strings.h>
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12
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13 char *infname;
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14 FILE *inf, *outf;
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15 char include_guard_symbol[32];
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16 char linebuf[256];
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17 int lineno;
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18
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19 make_include_guard_symbol(fname)
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20 char *fname;
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21 {
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22 char *sp, *dp;
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23 int c;
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24
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25 sp = fname;
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26 dp = include_guard_symbol;
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27 *dp++ = '_';
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28 *dp++ = '_';
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29 while (c = *sp++) {
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30 if (islower(c))
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31 c = toupper(c);
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32 else if (c == '.')
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33 c = '_';
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34 *dp++ = c;
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35 }
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36 *dp++ = '_';
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37 *dp++ = '_';
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38 *dp = '\0';
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39 }
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40
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41 close_output()
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42 {
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43 if (outf) {
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44 fprintf(outf, "#endif /* %s */\n", include_guard_symbol);
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45 fclose(outf);
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46 outf = 0;
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47 }
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48 }
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49
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50 bracket_line()
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51 {
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52 char *cp;
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53
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54 close_output();
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55 cp = index(linebuf+1, ']');
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56 if (!cp) {
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57 fprintf(stderr, "%s line %d: unterminated bracket line\n",
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58 infname, lineno);
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59 exit(1);
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60 }
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61 *cp = '\0';
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62 outf = fopen(linebuf+1, "w");
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63 if (!outf) {
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64 perror(linebuf+1);
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65 exit(1);
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66 }
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67 make_include_guard_symbol(linebuf+1);
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68 fprintf(outf, "#ifndef %s\n", include_guard_symbol);
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69 fprintf(outf, "#define %s\n", include_guard_symbol);
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70 }
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71
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72 process_line()
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73 {
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74 char *cp, *symbol, *value;
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75
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76 if (linebuf[0] == '[')
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77 return bracket_line();
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78 for (cp = linebuf; isspace(*cp); cp++)
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79 ;
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80 if (*cp == '\0' || *cp == '#')
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81 return;
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82 for (symbol = cp; *cp && !isspace(*cp); cp++)
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83 ;
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84 if (!*cp) {
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85 inv: fprintf(stderr, "%s line %d: expected two fields\n",
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86 infname, lineno);
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87 exit(1);
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88 }
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89 *cp++ = '\0';
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90 while (isspace(*cp))
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91 cp++;
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92 if (*cp == '\0' || *cp == '#')
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93 goto inv;
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94 for (value = cp; *cp && !isspace(*cp); cp++)
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95 ;
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96 if (*cp)
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97 *cp++ = '\0';
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98 while (isspace(*cp))
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99 cp++;
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100 if (*cp != '\0' && *cp != '#')
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101 goto inv;
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102 if (!strcmp(value, "var")) {
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103 value = getenv(symbol);
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104 if (!value) {
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105 fprintf(stderr,
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106 "%s line %d: no environment variable named %s\n",
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107 infname, lineno, symbol);
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108 exit(1);
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109 }
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110 }
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111 if (!outf) {
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112 fprintf(stderr, "%s line %d: no open output file\n",
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113 infname, lineno);
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114 exit(1);
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115 }
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116 fprintf(outf, "#define %s %s\n", symbol, value);
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117 }
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118
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119 main(argc, argv)
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120 char **argv;
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121 {
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122 if (argc != 3) {
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123 fprintf(stderr, "usage: %s template-file output-dir\n",
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124 argv[0]);
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125 exit(1);
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126 }
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127 infname = argv[1];
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128 inf = fopen(infname, "r");
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129 if (!inf) {
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130 perror(infname);
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131 exit(1);
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132 }
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133 if (chdir(argv[2]) < 0) {
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134 perror(argv[2]);
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135 exit(1);
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136 }
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137 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++)
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138 process_line();
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139 close_output();
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140 exit(0);
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141 }