Mercurial > hg > toybox
annotate kconfig/util.c @ 401:bc435ea49b2c
Don't make toysh default to y until it does something useful.
author | Rob Landley <rob@landley.net> |
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date | Wed, 28 Dec 2011 16:50:16 -0600 |
parents | 4d21d59f3206 |
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1 /* |
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2 * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org> |
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3 * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org> |
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4 * |
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5 * Released under the terms of the GNU GPL v2.0. |
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6 */ |
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7 |
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8 #include <string.h> |
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9 #include "lkc.h" |
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10 |
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11 /* file already present in list? If not add it */ |
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12 struct file *file_lookup(const char *name) |
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13 { |
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14 struct file *file; |
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15 |
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16 for (file = file_list; file; file = file->next) { |
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17 if (!strcmp(name, file->name)) |
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18 return file; |
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19 } |
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20 |
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21 file = malloc(sizeof(*file)); |
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22 memset(file, 0, sizeof(*file)); |
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23 file->name = strdup(name); |
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24 file->next = file_list; |
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25 file_list = file; |
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26 return file; |
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27 } |
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28 |
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29 /* write a dependency file as used by kbuild to track dependencies */ |
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30 int file_write_dep(const char *name) |
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31 { |
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32 struct file *file; |
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33 FILE *out; |
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34 |
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35 if (!name) |
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36 name = ".kconfig.d"; |
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37 out = fopen("..config.tmp", "w"); |
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38 if (!out) |
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39 return 1; |
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40 fprintf(out, "deps_config := \\\n"); |
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41 for (file = file_list; file; file = file->next) { |
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42 if (file->next) |
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43 fprintf(out, "\t%s \\\n", file->name); |
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44 else |
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45 fprintf(out, "\t%s\n", file->name); |
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46 } |
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47 fprintf(out, "\ninclude/config/auto.conf: \\\n" |
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48 "\t$(deps_config)\n\n" |
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49 "$(deps_config): ;\n"); |
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50 fclose(out); |
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51 rename("..config.tmp", name); |
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52 return 0; |
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53 } |
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54 |
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55 |
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56 /* Allocate initial growable sting */ |
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57 struct gstr str_new(void) |
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58 { |
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59 struct gstr gs; |
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60 gs.s = malloc(sizeof(char) * 64); |
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61 gs.len = 16; |
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62 strcpy(gs.s, "\0"); |
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63 return gs; |
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64 } |
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65 |
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66 /* Allocate and assign growable string */ |
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67 struct gstr str_assign(const char *s) |
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68 { |
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69 struct gstr gs; |
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70 gs.s = strdup(s); |
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71 gs.len = strlen(s) + 1; |
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72 return gs; |
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73 } |
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74 |
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75 /* Free storage for growable string */ |
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76 void str_free(struct gstr *gs) |
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77 { |
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78 if (gs->s) |
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79 free(gs->s); |
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80 gs->s = NULL; |
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81 gs->len = 0; |
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82 } |
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83 |
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84 /* Append to growable string */ |
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85 void str_append(struct gstr *gs, const char *s) |
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86 { |
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87 size_t l = strlen(gs->s) + strlen(s) + 1; |
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88 if (l > gs->len) { |
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89 gs->s = realloc(gs->s, l); |
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90 gs->len = l; |
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91 } |
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92 strcat(gs->s, s); |
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93 } |
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94 |
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95 /* Append printf formatted string to growable string */ |
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96 void str_printf(struct gstr *gs, const char *fmt, ...) |
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97 { |
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98 va_list ap; |
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99 char s[10000]; /* big enough... */ |
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100 va_start(ap, fmt); |
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101 vsnprintf(s, sizeof(s), fmt, ap); |
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102 str_append(gs, s); |
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103 va_end(ap); |
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104 } |
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105 |
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106 /* Retrieve value of growable string */ |
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107 const char *str_get(struct gstr *gs) |
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108 { |
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109 return gs->s; |
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110 } |
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111 |