src/types.c

   1 /* Copyright (c) 2006-2014 Jonas Fonseca <jonas.fonseca@gmail.com>
   2  *
   3  * This program is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU General Public License as
   5  * published by the Free Software Foundation; either version 2 of
   6  * the License, or (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #include "tig/tig.h"
  15 #include "tig/types.h"
  16
  17 /*
  18  * Enumerations
  19  */
  20
  21 int
  22 string_enum_compare(const char *str1, const char *str2, int len)
  23 {
  24         size_t i;
  25
  26 #define string_enum_sep(x) ((x) == '-' || (x) == '_')
  27
  28         /* Diff-Header == DIFF_HEADER */
  29         for (i = 0; i < len; i++) {
  30                 if (ascii_toupper(str1[i]) == ascii_toupper(str2[i]))
  31                         continue;
  32
  33                 if (string_enum_sep(str1[i]) &&
  34                     string_enum_sep(str2[i]))
  35                         continue;
  36
  37                 return str1[i] - str2[i];
  38         }
  39
  40         return 0;
  41 }
  42
  43 bool
  44 enum_name_copy(char *buf, size_t bufsize, const char *name)
  45 {
  46         int bufpos;
  47
  48         for (bufpos = 0; name[bufpos] && bufpos < bufsize - 1; bufpos++) {
  49                 buf[bufpos] = ascii_tolower(name[bufpos]);
  50                 if (buf[bufpos] == '_')
  51                         buf[bufpos] = '-';
  52         }
  53
  54         buf[bufpos] = 0;
  55         return bufpos < bufsize;
  56 }
  57
  58 const char *
  59 enum_name(const char *name)
  60 {
  61         static char buf[SIZEOF_STR];
  62
  63         return enum_name_copy(buf, sizeof(buf), name) ? buf : name;
  64 }
  65
  66 bool
  67 enum_name_prefixed(char buf[], size_t bufsize, const char *prefix, const char *name)
  68 {
  69         char prefixed[SIZEOF_STR];
  70
  71         if (*prefix) {
  72                 if (!string_format(prefixed, "%s-%s", prefix, name))
  73                         return FALSE;
  74                 name = prefixed;
  75         }
  76
  77         return enum_name_copy(buf, bufsize, name);
  78 }
  79
  80 const struct enum_map *
  81 find_enum_map(const char *type)
  82 {
  83         static struct {
  84                 const char *type;
  85                 const struct enum_map *map;
  86         } mappings[] = {
  87 #define DEFINE_ENUM_MAPPING(name, macro) { #name, name##_map },
  88                 ENUM_INFO(DEFINE_ENUM_MAPPING)
  89         };
  90         int i;
  91
  92         for (i = 0; i < ARRAY_SIZE(mappings); i++)
  93                 if (!strcmp(type, mappings[i].type))
  94                         return mappings[i].map;
  95         return NULL;
  96 }
  97
  98 bool
  99 map_enum_do(const struct enum_map_entry *map, size_t map_size, int *value, const char *name)
 100 {
 101         size_t namelen = strlen(name);
 102         int i;
 103
 104         for (i = 0; i < map_size; i++)
 105                 if (enum_equals(map[i], name, namelen)) {
 106                         *value = map[i].value;
 107                         return TRUE;
 108                 }
 109
 110         return FALSE;
 111 }
 112
 113 #define DEFINE_ENUM_MAPS(name, macro) DEFINE_ENUM_MAP(name, macro);
 114 ENUM_INFO(DEFINE_ENUM_MAPS);
 115
 116 /* vim: set ts=8 sw=8 noexpandtab: */