t/helper/test-config.c

   1 #include "cache.h"
   2 #include "string-list.h"
   3
   4 /*
   5  * This program exposes the C API of the configuration mechanism
   6  * as a set of simple commands in order to facilitate testing.
   7  *
   8  * Reads stdin and prints result of command to stdout:
   9  *
  10  * get_value -> prints the value with highest priority for the entered key
  11  *
  12  * get_value_multi -> prints all values for the entered key in increasing order
  13  *                   of priority
  14  *
  15  * get_int -> print integer value for the entered key or die
  16  *
  17  * get_bool -> print bool value for the entered key or die
  18  *
  19  * get_string -> print string value for the entered key or die
  20  *
  21  * configset_get_value -> returns value with the highest priority for the entered key
  22  *                      from a config_set constructed from files entered as arguments.
  23  *
  24  * configset_get_value_multi -> returns value_list for the entered key sorted in
  25  *                              ascending order of priority from a config_set
  26  *                              constructed from files entered as arguments.
  27  *
  28  * iterate -> iterate over all values using git_config(), and print some
  29  *            data for each
  30  *
  31  * Examples:
  32  *
  33  * To print the value with highest priority for key "foo.bAr Baz.rock":
  34  *      test-config get_value "foo.bAr Baz.rock"
  35  *
  36  */
  37
  38 static const char *scope_name(enum config_scope scope)
  39 {
  40         switch (scope) {
  41         case CONFIG_SCOPE_SYSTEM:
  42                 return "system";
  43         case CONFIG_SCOPE_GLOBAL:
  44                 return "global";
  45         case CONFIG_SCOPE_REPO:
  46                 return "repo";
  47         case CONFIG_SCOPE_CMDLINE:
  48                 return "cmdline";
  49         default:
  50                 return "unknown";
  51         }
  52 }
  53 static int iterate_cb(const char *var, const char *value, void *data)
  54 {
  55         static int nr;
  56
  57         if (nr++)
  58                 putchar('\n');
  59
  60         printf("key=%s\n", var);
  61         printf("value=%s\n", value ? value : "(null)");
  62         printf("origin=%s\n", current_config_origin_type());
  63         printf("name=%s\n", current_config_name());
  64         printf("scope=%s\n", scope_name(current_config_scope()));
  65
  66         return 0;
  67 }
  68
  69 static int early_config_cb(const char *var, const char *value, void *vdata)
  70 {
  71         const char *key = vdata;
  72
  73         if (!strcmp(key, var))
  74                 printf("%s\n", value);
  75
  76         return 0;
  77 }
  78
  79 int cmd_main(int argc, const char **argv)
  80 {
  81         int i, val;
  82         const char *v;
  83         const struct string_list *strptr;
  84         struct config_set cs;
  85
  86         if (argc == 3 && !strcmp(argv[1], "read_early_config")) {
  87                 read_early_config(early_config_cb, (void *)argv[2]);
  88                 return 0;
  89         }
  90
  91         setup_git_directory();
  92
  93         git_configset_init(&cs);
  94
  95         if (argc < 2) {
  96                 fprintf(stderr, "Please, provide a command name on the command-line\n");
  97                 goto exit1;
  98         } else if (argc == 3 && !strcmp(argv[1], "get_value")) {
  99                 if (!git_config_get_value(argv[2], &v)) {
 100                         if (!v)
 101                                 printf("(NULL)\n");
 102                         else
 103                                 printf("%s\n", v);
 104                         goto exit0;
 105                 } else {
 106                         printf("Value not found for \"%s\"\n", argv[2]);
 107                         goto exit1;
 108                 }
 109         } else if (argc == 3 && !strcmp(argv[1], "get_value_multi")) {
 110                 strptr = git_config_get_value_multi(argv[2]);
 111                 if (strptr) {
 112                         for (i = 0; i < strptr->nr; i++) {
 113                                 v = strptr->items[i].string;
 114                                 if (!v)
 115                                         printf("(NULL)\n");
 116                                 else
 117                                         printf("%s\n", v);
 118                         }
 119                         goto exit0;
 120                 } else {
 121                         printf("Value not found for \"%s\"\n", argv[2]);
 122                         goto exit1;
 123                 }
 124         } else if (argc == 3 && !strcmp(argv[1], "get_int")) {
 125                 if (!git_config_get_int(argv[2], &val)) {
 126                         printf("%d\n", val);
 127                         goto exit0;
 128                 } else {
 129                         printf("Value not found for \"%s\"\n", argv[2]);
 130                         goto exit1;
 131                 }
 132         } else if (argc == 3 && !strcmp(argv[1], "get_bool")) {
 133                 if (!git_config_get_bool(argv[2], &val)) {
 134                         printf("%d\n", val);
 135                         goto exit0;
 136                 } else {
 137                         printf("Value not found for \"%s\"\n", argv[2]);
 138                         goto exit1;
 139                 }
 140         } else if (argc == 3 && !strcmp(argv[1], "get_string")) {
 141                 if (!git_config_get_string_const(argv[2], &v)) {
 142                         printf("%s\n", v);
 143                         goto exit0;
 144                 } else {
 145                         printf("Value not found for \"%s\"\n", argv[2]);
 146                         goto exit1;
 147                 }
 148         } else if (!strcmp(argv[1], "configset_get_value")) {
 149                 for (i = 3; i < argc; i++) {
 150                         int err;
 151                         if ((err = git_configset_add_file(&cs, argv[i]))) {
 152                                 fprintf(stderr, "Error (%d) reading configuration file %s.\n", err, argv[i]);
 153                                 goto exit2;
 154                         }
 155                 }
 156                 if (!git_configset_get_value(&cs, argv[2], &v)) {
 157                         if (!v)
 158                                 printf("(NULL)\n");
 159                         else
 160                                 printf("%s\n", v);
 161                         goto exit0;
 162                 } else {
 163                         printf("Value not found for \"%s\"\n", argv[2]);
 164                         goto exit1;
 165                 }
 166         } else if (!strcmp(argv[1], "configset_get_value_multi")) {
 167                 for (i = 3; i < argc; i++) {
 168                         int err;
 169                         if ((err = git_configset_add_file(&cs, argv[i]))) {
 170                                 fprintf(stderr, "Error (%d) reading configuration file %s.\n", err, argv[i]);
 171                                 goto exit2;
 172                         }
 173                 }
 174                 strptr = git_configset_get_value_multi(&cs, argv[2]);
 175                 if (strptr) {
 176                         for (i = 0; i < strptr->nr; i++) {
 177                                 v = strptr->items[i].string;
 178                                 if (!v)
 179                                         printf("(NULL)\n");
 180                                 else
 181                                         printf("%s\n", v);
 182                         }
 183                         goto exit0;
 184                 } else {
 185                         printf("Value not found for \"%s\"\n", argv[2]);
 186                         goto exit1;
 187                 }
 188         } else if (!strcmp(argv[1], "iterate")) {
 189                 git_config(iterate_cb, NULL);
 190                 goto exit0;
 191         }
 192
 193         die("%s: Please check the syntax and the function name", argv[0]);
 194
 195 exit0:
 196         git_configset_clear(&cs);
 197         return 0;
 198
 199 exit1:
 200         git_configset_clear(&cs);
 201         return 1;
 202
 203 exit2:
 204         git_configset_clear(&cs);
 205         return 2;
 206 }