FreeCalypso > hg > fc-magnetite

annotate helpers/cfg-hdr-gen.c @ 686:59f07d67eb45

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luna target split into luna1 and luna2 luna1 is FC Luna based on iWOW DSK v4.0 or v5.0 motherboard luna2 is FC Luna based on FC Caramel2 MB
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 12 Oct 2020 18:51:24 +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 /*
b8b08c302ace cfg-hdr-gen C helper program written
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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.
b8b08c302ace cfg-hdr-gen C helper program written
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4 */
b8b08c302ace cfg-hdr-gen C helper program written
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5
b8b08c302ace cfg-hdr-gen C helper program written
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6 #include <stdio.h>
b8b08c302ace cfg-hdr-gen C helper program written
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7 #include <stdlib.h>
b8b08c302ace cfg-hdr-gen C helper program written
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8 #include <unistd.h>
b8b08c302ace cfg-hdr-gen C helper program written
Mychaela Falconia <falcon@freecalypso.org>
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9 #include <ctype.h>
b8b08c302ace cfg-hdr-gen C helper program written
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10 #include <string.h>
b8b08c302ace cfg-hdr-gen C helper program written
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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",
b8b08c302ace cfg-hdr-gen C helper program written
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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",
b8b08c302ace cfg-hdr-gen C helper program written
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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 }