FreeCalypso > hg > gsm-net-reveng

annotate d144/edata-input-compile.c @ 66:599fac1b882d

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pathloss: implement FSL
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 25 Oct 2024 08:12:28 +0000
parents 4681ad8483d6
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * This program compiles E-data input from our handcrafting format
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3 * into the binary format that will be read by itt-ater-16.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <ctype.h>
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8 #include <stdio.h>
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9 #include <stdint.h>
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10 #include <stdlib.h>
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11 #include <string.h>
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12 #include <strings.h>
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13
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14 #define MAX_FIELDS 8
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15
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16 static char *infname, *outfname;
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17 static FILE *inf, *outf;
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18
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19 static int lineno;
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20 static char linebuf[256];
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21 static char *fields[MAX_FIELDS];
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22 static unsigned nfields;
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23
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24 static uint8_t frame_nibbles[72];
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25 static unsigned subframe_count;
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27 static int
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28 get_line()
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29 {
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30 char *cp;
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31
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32 if (!fgets(linebuf, sizeof linebuf, inf))
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33 return 1;
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34 lineno++;
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35 if (!index(linebuf, '\n')) {
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36 fprintf(stderr, "%s line %d: too long or missing newline\n",
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37 infname, lineno);
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38 exit(1);
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39 }
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40 nfields = 0;
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41 for (cp = linebuf; ; ) {
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42 while (isspace(*cp))
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43 cp++;
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44 if (*cp == '\0' || *cp == '#')
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45 break;
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46 if (nfields >= MAX_FIELDS) {
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47 fprintf(stderr, "%s line %d: too many fields\n",
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48 infname, lineno);
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49 exit(1);
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50 }
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51 fields[nfields++] = cp;
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52 while (*cp && !isspace(*cp))
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53 cp++;
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54 if (*cp)
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55 *cp++ = '\0';
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56 }
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57 return 0;
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58 }
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59
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60 static int
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61 get_line_nonempty()
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62 {
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63 int rc;
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64
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65 for (;;) {
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66 rc = get_line();
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67 if (rc)
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68 return rc;
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69 if (nfields)
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70 return 0;
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71 }
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72 }
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73
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74 static int
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75 decode_hex_digit(c)
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76 {
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77 if (isdigit(c))
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78 return c - '0';
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79 else if (isupper(c))
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80 return c - 'A' + 10;
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81 else
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82 return c - 'a' + 10;
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83 }
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84
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85 static void
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86 bits_line()
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87 {
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88 uint8_t *op;
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89 char *cp;
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90 unsigned n;
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91
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92 if (nfields != 2) {
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93 fprintf(stderr, "%s line %d: bits command takes one argument\n",
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94 infname, lineno);
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95 exit(1);
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96 }
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97 if (strlen(fields[1]) != 9) {
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98 fprintf(stderr, "%s line %d: bits argument has wrong length\n",
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99 infname, lineno);
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100 exit(1);
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101 }
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102 if (subframe_count >= 8) {
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103 fprintf(stderr,
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104 "%s line %d: 8 subframes already given, can't have more\n",
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105 infname, lineno);
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106 exit(1);
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107 }
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108 op = frame_nibbles + subframe_count * 9;
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109 cp = fields[1];
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110 for (n = 0; n < 9; n++) {
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111 if (!isxdigit(*cp)) {
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112 fprintf(stderr,
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113 "%s line %d: bits argument is not valid hex\n",
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114 infname, lineno);
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115 exit(1);
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116 }
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117 *op++ = decode_hex_digit(*cp++);
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118 }
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119 subframe_count++;
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120 }
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121
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122 static void
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123 frame_line()
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124 {
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125 uint8_t bin[38], m_bits[2];
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126 unsigned n, i;
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127
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128 if (nfields != 2) {
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129 fprintf(stderr,
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130 "%s line %d: frame command takes one argument\n",
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131 infname, lineno);
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132 exit(1);
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133 }
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134 for (n = 0; n < 2; n++) {
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135 switch (fields[1][n]) {
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136 case '0':
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137 m_bits[n] = 0;
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138 break;
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139 case '1':
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140 m_bits[n] = 1;
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141 break;
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142 default:
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143 bad_arg:
24
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 fprintf(stderr,
52
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
145 "%s line %d: invalid M-bits argument \"%s\"\n",
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
146 infname, lineno, fields[1]);
24
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 exit(1);
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 }
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 }
52
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
150 if (fields[1][2])
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
151 goto bad_arg;
24
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152
52
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
153 if (subframe_count != 8) {
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
154 fprintf(stderr,
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
155 "%s line %d: not preceded by exactly 8 subframes\n",
24
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 infname, lineno);
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 exit(1);
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 }
52
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
159 bin[0] = 0xD4;
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
160 bin[1] = (m_bits[0] << 1) | m_bits[1];
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
161 i = 0;
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
162 for (n = 0; n < 36; n++) {
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
163 bin[n+2] = (frame_nibbles[i] << 4) | frame_nibbles[i+1];
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
164 i += 2;
24
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 }
52
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
166 fwrite(bin, 1, 38, outf);
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
167
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
168 subframe_count = 0;
24
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 }
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 main(argc, argv)
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 char **argv;
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 {
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 int rc;
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 if (argc != 3) {
52
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
177 fprintf(stderr, "usage: %s input.src output.bin\n", argv[0]);
24
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 exit(1);
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 }
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 infname = argv[1];
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 outfname = argv[2];
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 inf = fopen(infname, "r");
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 if (!inf) {
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 perror(infname);
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 exit(1);
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 }
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 outf = fopen(outfname, "w");
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 if (!outf) {
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 perror(outfname);
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 exit(1);
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 }
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 for (;;) {
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 rc = get_line_nonempty();
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 if (rc)
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 break;
52
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
198 if (!strcasecmp(fields[0], "bits"))
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
199 bits_line();
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
200 else if (!strcasecmp(fields[0], "frame"))
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
201 frame_line();
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
202 else {
24
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 fprintf(stderr,
52
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
204 "%s line %d: non-understood keyword \"%s\"\n",
4681ad8483d6 d144: edata-input-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 24
diff changeset
205 infname, lineno, fields[0]);
24
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 exit(1);
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 }
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 }
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 exit(0);
8e9bbb83bd16 trau-ul-compile program written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 }