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annotate lwar/list.c @ 519:724bcc4508bc

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Add SETSTR/INCLUDESTR for some basic code building It seemed useful to have the ability to build up a variable containing arbitrary text and then to be able to include that in the assembly process like an include file. So add, undocumented for now, the following: SETTSTR varname="string" INCLUDESTSR "string" "string" must be enclosed in double quotes and may contain most of the usual escape sequences (\t, \r, etc.) as well as %(varname) to interpolate a variable value. To use it to create assembleable source code, you need to make sure it creates lines (ended by either \r or \n) with appropriate whitespace in appropriate places.
author William Astle <lost@l-w.ca>
date Sun, 19 Dec 2021 17:01:42 -0700
parents 6f4c4d59666f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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1 /*
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2 list.c
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3 Copyright © 2009 William Astle
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4
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5 This file is part of LWAR.
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6
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7 LWAR is free software: you can redistribute it and/or modify it under the
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8 terms of the GNU General Public License as published by the Free Software
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9 Foundation, either version 3 of the License, or (at your option) any later
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10 version.
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11
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12 This program is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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15 more details.
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16
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17 You should have received a copy of the GNU General Public License along with
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18 this program. If not, see <http://www.gnu.org/licenses/>.
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20
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21 Implements the program startup code
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22
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23 */
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24
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25 #include <errno.h>
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26 #include <stdio.h>
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27 #include <stdlib.h>
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28 #include <string.h>
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29
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30 #include "lwar.h"
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31
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32 void do_list(void)
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33 {
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34 FILE *f;
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35 char buf[8];
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36 long l;
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37 int c;
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38
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39 f = fopen(archive_file, "rb");
0
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40 if (!f)
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41 {
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42 perror("Opening archive file");
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43 exit(1);
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44 }
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45
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46 (void)(fread(buf, 1, 6, f) && 1);
0
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47 if (memcmp("LWAR1V", buf, 6))
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48 {
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49 fprintf(stderr, "%s is not a valid archive file.\n", archive_file);
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50 exit(1);
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51 }
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52
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53 for (;;)
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54 {
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55 c = fgetc(f);
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56 if (ferror(f))
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57 {
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58 perror("Reading archive file");
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59 exit(1);
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60 }
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61 if (c == EOF)
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62 return;
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63
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64
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65 // find the end of the file name
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66 if (!c)
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67 return;
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68
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69 while (c)
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70 {
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71 putchar(c);
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72 c = fgetc(f);
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73 if (c == EOF || ferror(f))
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74 {
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75 fprintf(stderr, "Bad archive file\n");
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76 exit(1);
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77 }
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78 }
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79
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80 // get length of archive member
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81 l = 0;
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82 c = fgetc(f);
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83 l = c << 24;
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84 c = fgetc(f);
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85 l |= c << 16;
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86 c = fgetc(f);
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87 l |= c << 8;
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88 c = fgetc(f);
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89 l |= c;
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90 printf(": %04lx bytes\n", l);
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91 fseek(f, l, SEEK_CUR);
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92 }
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93 }