apply.c

   1 #include "cache.h"
   2 #include "lockfile.h"
   3 #include "apply.h"
   4
   5 static void git_apply_config(void)
   6 {
   7         git_config_get_string_const("apply.whitespace", &apply_default_whitespace);
   8         git_config_get_string_const("apply.ignorewhitespace", &apply_default_ignorewhitespace);
   9         git_config(git_default_config, NULL);
  10 }
  11
  12 int parse_whitespace_option(struct apply_state *state, const char *option)
  13 {
  14         if (!option) {
  15                 state->ws_error_action = warn_on_ws_error;
  16                 return 0;
  17         }
  18         if (!strcmp(option, "warn")) {
  19                 state->ws_error_action = warn_on_ws_error;
  20                 return 0;
  21         }
  22         if (!strcmp(option, "nowarn")) {
  23                 state->ws_error_action = nowarn_ws_error;
  24                 return 0;
  25         }
  26         if (!strcmp(option, "error")) {
  27                 state->ws_error_action = die_on_ws_error;
  28                 return 0;
  29         }
  30         if (!strcmp(option, "error-all")) {
  31                 state->ws_error_action = die_on_ws_error;
  32                 state->squelch_whitespace_errors = 0;
  33                 return 0;
  34         }
  35         if (!strcmp(option, "strip") || !strcmp(option, "fix")) {
  36                 state->ws_error_action = correct_ws_error;
  37                 return 0;
  38         }
  39         return error(_("unrecognized whitespace option '%s'"), option);
  40 }
  41
  42 int parse_ignorewhitespace_option(struct apply_state *state,
  43                                   const char *option)
  44 {
  45         if (!option || !strcmp(option, "no") ||
  46             !strcmp(option, "false") || !strcmp(option, "never") ||
  47             !strcmp(option, "none")) {
  48                 state->ws_ignore_action = ignore_ws_none;
  49                 return 0;
  50         }
  51         if (!strcmp(option, "change")) {
  52                 state->ws_ignore_action = ignore_ws_change;
  53                 return 0;
  54         }
  55         return error(_("unrecognized whitespace ignore option '%s'"), option);
  56 }
  57
  58 int init_apply_state(struct apply_state *state,
  59                      const char *prefix,
  60                      struct lock_file *lock_file)
  61 {
  62         memset(state, 0, sizeof(*state));
  63         state->prefix = prefix;
  64         state->prefix_length = state->prefix ? strlen(state->prefix) : 0;
  65         state->lock_file = lock_file;
  66         state->newfd = -1;
  67         state->apply = 1;
  68         state->line_termination = '\n';
  69         state->p_value = 1;
  70         state->p_context = UINT_MAX;
  71         state->squelch_whitespace_errors = 5;
  72         state->ws_error_action = warn_on_ws_error;
  73         state->ws_ignore_action = ignore_ws_none;
  74         state->linenr = 1;
  75         string_list_init(&state->fn_table, 0);
  76         string_list_init(&state->limit_by_name, 0);
  77         string_list_init(&state->symlink_changes, 0);
  78         strbuf_init(&state->root, 0);
  79
  80         git_apply_config();
  81         if (apply_default_whitespace && parse_whitespace_option(state, apply_default_whitespace))
  82                 return -1;
  83         if (apply_default_ignorewhitespace && parse_ignorewhitespace_option(state, apply_default_ignorewhitespace))
  84                 return -1;
  85         return 0;
  86 }
  87
  88 void clear_apply_state(struct apply_state *state)
  89 {
  90         string_list_clear(&state->limit_by_name, 0);
  91         string_list_clear(&state->symlink_changes, 0);
  92         strbuf_release(&state->root);
  93
  94         /* &state->fn_table is cleared at the end of apply_patch() */
  95 }
  96
  97 int check_apply_state(struct apply_state *state, int force_apply)
  98 {
  99         int is_not_gitdir = !startup_info->have_repository;
 100
 101         if (state->apply_with_reject && state->threeway)
 102                 return error("--reject and --3way cannot be used together.");
 103         if (state->cached && state->threeway)
 104                 return error("--cached and --3way cannot be used together.");
 105         if (state->threeway) {
 106                 if (is_not_gitdir)
 107                         return error(_("--3way outside a repository"));
 108                 state->check_index = 1;
 109         }
 110         if (state->apply_with_reject)
 111                 state->apply = state->apply_verbosely = 1;
 112         if (!force_apply && (state->diffstat || state->numstat || state->summary || state->check || state->fake_ancestor))
 113                 state->apply = 0;
 114         if (state->check_index && is_not_gitdir)
 115                 return error(_("--index outside a repository"));
 116         if (state->cached) {
 117                 if (is_not_gitdir)
 118                         return error(_("--cached outside a repository"));
 119                 state->check_index = 1;
 120         }
 121         if (state->check_index)
 122                 state->unsafe_paths = 0;
 123         if (!state->lock_file)
 124                 return error("BUG: state->lock_file should not be NULL");
 125
 126         return 0;
 127 }