Andrew's git / gitweb.git /
e9726ce8c5f305b711cc0696797405ed3742fe14
   1#include "cache.h"
   2#include "alias.h"
   3#include "config.h"
   4
   5struct config_alias_data {
   6        const char *alias;
   7        char *v;
   8};
   9
  10static int config_alias_cb(const char *key, const char *value, void *d)
  11{
  12        struct config_alias_data *data = d;
  13        const char *p;
  14
  15        if (skip_prefix(key, "alias.", &p) && !strcasecmp(p, data->alias))
  16                return git_config_string((const char **)&data->v, key, value);
  17
  18        return 0;
  19}
  20
  21char *alias_lookup(const char *alias)
  22{
  23        struct config_alias_data data = { alias, NULL };
  24
  25        read_early_config(config_alias_cb, &data);
  26
  27        return data.v;
  28}
  29
  30#define SPLIT_CMDLINE_BAD_ENDING 1
  31#define SPLIT_CMDLINE_UNCLOSED_QUOTE 2
  32static const char *split_cmdline_errors[] = {
  33        "cmdline ends with \\",
  34        "unclosed quote"
  35};
  36
  37int split_cmdline(char *cmdline, const char ***argv)
  38{
  39        int src, dst, count = 0, size = 16;
  40        char quoted = 0;
  41
  42        ALLOC_ARRAY(*argv, size);
  43
  44        /* split alias_string */
  45        (*argv)[count++] = cmdline;
  46        for (src = dst = 0; cmdline[src];) {
  47                char c = cmdline[src];
  48                if (!quoted && isspace(c)) {
  49                        cmdline[dst++] = 0;
  50                        while (cmdline[++src]
  51                                        && isspace(cmdline[src]))
  52                                ; /* skip */
  53                        ALLOC_GROW(*argv, count + 1, size);
  54                        (*argv)[count++] = cmdline + dst;
  55                } else if (!quoted && (c == '\'' || c == '"')) {
  56                        quoted = c;
  57                        src++;
  58                } else if (c == quoted) {
  59                        quoted = 0;
  60                        src++;
  61                } else {
  62                        if (c == '\\' && quoted != '\'') {
  63                                src++;
  64                                c = cmdline[src];
  65                                if (!c) {
  66                                        FREE_AND_NULL(*argv);
  67                                        return -SPLIT_CMDLINE_BAD_ENDING;
  68                                }
  69                        }
  70                        cmdline[dst++] = c;
  71                        src++;
  72                }
  73        }
  74
  75        cmdline[dst] = 0;
  76
  77        if (quoted) {
  78                FREE_AND_NULL(*argv);
  79                return -SPLIT_CMDLINE_UNCLOSED_QUOTE;
  80        }
  81
  82        ALLOC_GROW(*argv, count + 1, size);
  83        (*argv)[count] = NULL;
  84
  85        return count;
  86}
  87
  88const char *split_cmdline_strerror(int split_cmdline_errno)
  89{
  90        return split_cmdline_errors[-split_cmdline_errno - 1];
  91}