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1899
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1 /*
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2 convenient routines for argument list handling
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3
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4 Copyright (C) Andrew Tridgell 2002
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5
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6 This program is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2 of the License, or
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9 (at your option) any later version.
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10
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11 This program is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with this program; if not, write to the Free Software
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18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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19 */
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20
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21 #include "ccache.h"
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22
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23 ARGS *args_init(int init_argc, char **init_args)
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24 {
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25 ARGS *args;
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26 int i;
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27 args = (ARGS *)x_malloc(sizeof(ARGS));
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28 args->argc = 0;
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29 args->argv = (char **)x_malloc(sizeof(char *));
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30 args->argv[0] = NULL;
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31 for (i=0;i<init_argc;i++) {
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32 args_add(args, init_args[i]);
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33 }
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34 return args;
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35 }
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36
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37
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38 void args_add(ARGS *args, const char *s)
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39 {
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40 args->argv = (char**)x_realloc(args->argv, (args->argc + 2) * sizeof(char *));
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41 args->argv[args->argc] = x_strdup(s);
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42 args->argc++;
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43 args->argv[args->argc] = NULL;
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44 }
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45
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46 /* pop the last element off the args list */
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47 void args_pop(ARGS *args, int n)
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48 {
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49 while (n--) {
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50 args->argc--;
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51 free(args->argv[args->argc]);
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52 args->argv[args->argc] = NULL;
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53 }
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54 }
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55
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56 /* remove the first element of the argument list */
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57 void args_remove_first(ARGS *args)
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58 {
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59 free(args->argv[0]);
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60 memmove(&args->argv[0],
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61 &args->argv[1],
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62 args->argc * sizeof(args->argv[0]));
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63 args->argc--;
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64 }
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65
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66 /* add an argument into the front of the argument list */
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67 void args_add_prefix(ARGS *args, const char *s)
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68 {
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69 args->argv = (char**)x_realloc(args->argv, (args->argc + 2) * sizeof(char *));
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70 memmove(&args->argv[1], &args->argv[0],
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71 (args->argc+1) * sizeof(args->argv[0]));
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72 args->argv[0] = x_strdup(s);
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73 args->argc++;
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74 }
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75
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76 /* strip any arguments beginning with the specified prefix */
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77 void args_strip(ARGS *args, const char *prefix)
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78 {
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79 int i;
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80 for (i=0; i<args->argc; ) {
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81 if (strncmp(args->argv[i], prefix, strlen(prefix)) == 0) {
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82 free(args->argv[i]);
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83 memmove(&args->argv[i],
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84 &args->argv[i+1],
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85 args->argc * sizeof(args->argv[i]));
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86 args->argc--;
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87 } else {
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88 i++;
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89 }
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90 }
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91 }
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