Andrew's git / gitweb.git / wt-status.c
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wt-status.con commit contrib/hooks/post-receive-email: reformat to wrap comments at 76 chars (15a2f53)
   1#include "cache.h"
   2#include "wt-status.h"
   3#include "color.h"
   4#include "object.h"
   5#include "dir.h"
   6#include "commit.h"
   7#include "diff.h"
   8#include "revision.h"
   9#include "diffcore.h"
  10
  11int wt_status_use_color = 0;
  12static char wt_status_colors[][COLOR_MAXLEN] = {
  13        "",         /* WT_STATUS_HEADER: normal */
  14        "\033[32m", /* WT_STATUS_UPDATED: green */
  15        "\033[31m", /* WT_STATUS_CHANGED: red */
  16        "\033[31m", /* WT_STATUS_UNTRACKED: red */
  17};
  18
  19static const char use_add_msg[] =
  20"use \"git add <file>...\" to update what will be committed";
  21static const char use_add_rm_msg[] =
  22"use \"git add/rm <file>...\" to update what will be committed";
  23static const char use_add_to_include_msg[] =
  24"use \"git add <file>...\" to include in what will be committed";
  25static const char *excludes_file;
  26
  27static int parse_status_slot(const char *var, int offset)
  28{
  29        if (!strcasecmp(var+offset, "header"))
  30                return WT_STATUS_HEADER;
  31        if (!strcasecmp(var+offset, "updated")
  32                || !strcasecmp(var+offset, "added"))
  33                return WT_STATUS_UPDATED;
  34        if (!strcasecmp(var+offset, "changed"))
  35                return WT_STATUS_CHANGED;
  36        if (!strcasecmp(var+offset, "untracked"))
  37                return WT_STATUS_UNTRACKED;
  38        die("bad config variable '%s'", var);
  39}
  40
  41static const char* color(int slot)
  42{
  43        return wt_status_use_color ? wt_status_colors[slot] : "";
  44}
  45
  46void wt_status_prepare(struct wt_status *s)
  47{
  48        unsigned char sha1[20];
  49        const char *head;
  50
  51        memset(s, 0, sizeof(*s));
  52        head = resolve_ref("HEAD", sha1, 0, NULL);
  53        s->branch = head ? xstrdup(head) : NULL;
  54        s->reference = "HEAD";
  55        s->fp = stdout;
  56        s->index_file = get_index_file();
  57}
  58
  59static void wt_status_print_cached_header(struct wt_status *s)
  60{
  61        const char *c = color(WT_STATUS_HEADER);
  62        color_fprintf_ln(s->fp, c, "# Changes to be committed:");
  63        if (s->reference) {
  64                color_fprintf_ln(s->fp, c, "#   (use \"git reset %s <file>...\" to unstage)", s->reference);
  65        } else {
  66                color_fprintf_ln(s->fp, c, "#   (use \"git rm --cached <file>...\" to unstage)");
  67        }
  68        color_fprintf_ln(s->fp, c, "#");
  69}
  70
  71static void wt_status_print_header(struct wt_status *s,
  72                                   const char *main, const char *sub)
  73{
  74        const char *c = color(WT_STATUS_HEADER);
  75        color_fprintf_ln(s->fp, c, "# %s:", main);
  76        color_fprintf_ln(s->fp, c, "#   (%s)", sub);
  77        color_fprintf_ln(s->fp, c, "#");
  78}
  79
  80static void wt_status_print_trailer(struct wt_status *s)
  81{
  82        color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
  83}
  84
  85static const char *quote_crlf(const char *in, char *buf, size_t sz)
  86{
  87        const char *scan;
  88        char *out;
  89        const char *ret = in;
  90
  91        for (scan = in, out = buf; *scan; scan++) {
  92                int ch = *scan;
  93                int quoted;
  94
  95                switch (ch) {
  96                case '\n':
  97                        quoted = 'n';
  98                        break;
  99                case '\r':
 100                        quoted = 'r';
 101                        break;
 102                default:
 103                        *out++ = ch;
 104                        continue;
 105                }
 106                *out++ = '\\';
 107                *out++ = quoted;
 108                ret = buf;
 109        }
 110        *out = '\0';
 111        return ret;
 112}
 113
 114static void wt_status_print_filepair(struct wt_status *s,
 115                                     int t, struct diff_filepair *p)
 116{
 117        const char *c = color(t);
 118        const char *one, *two;
 119        char onebuf[PATH_MAX], twobuf[PATH_MAX];
 120
 121        one = quote_crlf(p->one->path, onebuf, sizeof(onebuf));
 122        two = quote_crlf(p->two->path, twobuf, sizeof(twobuf));
 123
 124        color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 125        switch (p->status) {
 126        case DIFF_STATUS_ADDED:
 127                color_fprintf(s->fp, c, "new file:   %s", one);
 128                break;
 129        case DIFF_STATUS_COPIED:
 130                color_fprintf(s->fp, c, "copied:     %s -> %s", one, two);
 131                break;
 132        case DIFF_STATUS_DELETED:
 133                color_fprintf(s->fp, c, "deleted:    %s", one);
 134                break;
 135        case DIFF_STATUS_MODIFIED:
 136                color_fprintf(s->fp, c, "modified:   %s", one);
 137                break;
 138        case DIFF_STATUS_RENAMED:
 139                color_fprintf(s->fp, c, "renamed:    %s -> %s", one, two);
 140                break;
 141        case DIFF_STATUS_TYPE_CHANGED:
 142                color_fprintf(s->fp, c, "typechange: %s", one);
 143                break;
 144        case DIFF_STATUS_UNKNOWN:
 145                color_fprintf(s->fp, c, "unknown:    %s", one);
 146                break;
 147        case DIFF_STATUS_UNMERGED:
 148                color_fprintf(s->fp, c, "unmerged:   %s", one);
 149                break;
 150        default:
 151                die("bug: unhandled diff status %c", p->status);
 152        }
 153        fprintf(s->fp, "\n");
 154}
 155
 156static void wt_status_print_updated_cb(struct diff_queue_struct *q,
 157                struct diff_options *options,
 158                void *data)
 159{
 160        struct wt_status *s = data;
 161        int shown_header = 0;
 162        int i;
 163        for (i = 0; i < q->nr; i++) {
 164                if (q->queue[i]->status == 'U')
 165                        continue;
 166                if (!shown_header) {
 167                        wt_status_print_cached_header(s);
 168                        s->commitable = 1;
 169                        shown_header = 1;
 170                }
 171                wt_status_print_filepair(s, WT_STATUS_UPDATED, q->queue[i]);
 172        }
 173        if (shown_header)
 174                wt_status_print_trailer(s);
 175}
 176
 177static void wt_status_print_changed_cb(struct diff_queue_struct *q,
 178                        struct diff_options *options,
 179                        void *data)
 180{
 181        struct wt_status *s = data;
 182        int i;
 183        if (q->nr) {
 184                const char *msg = use_add_msg;
 185                s->workdir_dirty = 1;
 186                for (i = 0; i < q->nr; i++)
 187                        if (q->queue[i]->status == DIFF_STATUS_DELETED) {
 188                                msg = use_add_rm_msg;
 189                                break;
 190                        }
 191                wt_status_print_header(s, "Changed but not updated", msg);
 192        }
 193        for (i = 0; i < q->nr; i++)
 194                wt_status_print_filepair(s, WT_STATUS_CHANGED, q->queue[i]);
 195        if (q->nr)
 196                wt_status_print_trailer(s);
 197}
 198
 199static void wt_read_cache(struct wt_status *s)
 200{
 201        discard_cache();
 202        read_cache_from(s->index_file);
 203}
 204
 205static void wt_status_print_initial(struct wt_status *s)
 206{
 207        int i;
 208        char buf[PATH_MAX];
 209
 210        wt_read_cache(s);
 211        if (active_nr) {
 212                s->commitable = 1;
 213                wt_status_print_cached_header(s);
 214        }
 215        for (i = 0; i < active_nr; i++) {
 216                color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 217                color_fprintf_ln(s->fp, color(WT_STATUS_UPDATED), "new file: %s",
 218                                quote_crlf(active_cache[i]->name,
 219                                           buf, sizeof(buf)));
 220        }
 221        if (active_nr)
 222                wt_status_print_trailer(s);
 223}
 224
 225static void wt_status_print_updated(struct wt_status *s)
 226{
 227        struct rev_info rev;
 228        init_revisions(&rev, NULL);
 229        setup_revisions(0, NULL, &rev, s->reference);
 230        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 231        rev.diffopt.format_callback = wt_status_print_updated_cb;
 232        rev.diffopt.format_callback_data = s;
 233        rev.diffopt.detect_rename = 1;
 234        rev.diffopt.rename_limit = 100;
 235        wt_read_cache(s);
 236        run_diff_index(&rev, 1);
 237}
 238
 239static void wt_status_print_changed(struct wt_status *s)
 240{
 241        struct rev_info rev;
 242        init_revisions(&rev, "");
 243        setup_revisions(0, NULL, &rev, NULL);
 244        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 245        rev.diffopt.format_callback = wt_status_print_changed_cb;
 246        rev.diffopt.format_callback_data = s;
 247        wt_read_cache(s);
 248        run_diff_files(&rev, 0);
 249}
 250
 251static void wt_status_print_untracked(struct wt_status *s)
 252{
 253        struct dir_struct dir;
 254        const char *x;
 255        int i;
 256        int shown_header = 0;
 257
 258        memset(&dir, 0, sizeof(dir));
 259
 260        dir.exclude_per_dir = ".gitignore";
 261        if (!s->untracked) {
 262                dir.show_other_directories = 1;
 263                dir.hide_empty_directories = 1;
 264        }
 265        x = git_path("info/exclude");
 266        if (file_exists(x))
 267                add_excludes_from_file(&dir, x);
 268        if (excludes_file && file_exists(excludes_file))
 269                add_excludes_from_file(&dir, excludes_file);
 270
 271        read_directory(&dir, ".", "", 0, NULL);
 272        for(i = 0; i < dir.nr; i++) {
 273                /* check for matching entry, which is unmerged; lifted from
 274                 * builtin-ls-files:show_other_files */
 275                struct dir_entry *ent = dir.entries[i];
 276                int pos = cache_name_pos(ent->name, ent->len);
 277                struct cache_entry *ce;
 278                if (0 <= pos)
 279                        die("bug in wt_status_print_untracked");
 280                pos = -pos - 1;
 281                if (pos < active_nr) {
 282                        ce = active_cache[pos];
 283                        if (ce_namelen(ce) == ent->len &&
 284                            !memcmp(ce->name, ent->name, ent->len))
 285                                continue;
 286                }
 287                if (!shown_header) {
 288                        s->workdir_untracked = 1;
 289                        wt_status_print_header(s, "Untracked files",
 290                                               use_add_to_include_msg);
 291                        shown_header = 1;
 292                }
 293                color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 294                color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED), "%.*s",
 295                                ent->len, ent->name);
 296        }
 297}
 298
 299static void wt_status_print_verbose(struct wt_status *s)
 300{
 301        struct rev_info rev;
 302        init_revisions(&rev, NULL);
 303        setup_revisions(0, NULL, &rev, s->reference);
 304        rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 305        rev.diffopt.detect_rename = 1;
 306        wt_read_cache(s);
 307        run_diff_index(&rev, 1);
 308}
 309
 310void wt_status_print(struct wt_status *s)
 311{
 312        unsigned char sha1[20];
 313        s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
 314
 315        if (s->branch) {
 316                const char *on_what = "On branch ";
 317                const char *branch_name = s->branch;
 318                if (!prefixcmp(branch_name, "refs/heads/"))
 319                        branch_name += 11;
 320                else if (!strcmp(branch_name, "HEAD")) {
 321                        branch_name = "";
 322                        on_what = "Not currently on any branch.";
 323                }
 324                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER),
 325                        "# %s%s", on_what, branch_name);
 326        }
 327
 328        if (s->is_initial) {
 329                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
 330                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "# Initial commit");
 331                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
 332                wt_status_print_initial(s);
 333        }
 334        else {
 335                wt_status_print_updated(s);
 336        }
 337
 338        wt_status_print_changed(s);
 339        wt_status_print_untracked(s);
 340
 341        if (s->verbose && !s->is_initial)
 342                wt_status_print_verbose(s);
 343        if (!s->commitable) {
 344                if (s->amend)
 345                        fprintf(s->fp, "# No changes\n");
 346                else if (s->workdir_dirty)
 347                        printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
 348                else if (s->workdir_untracked)
 349                        printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
 350                else if (s->is_initial)
 351                        printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
 352                else
 353                        printf("nothing to commit (working directory clean)\n");
 354        }
 355}
 356
 357int git_status_config(const char *k, const char *v)
 358{
 359        if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
 360                wt_status_use_color = git_config_colorbool(k, v);
 361                return 0;
 362        }
 363        if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
 364                int slot = parse_status_slot(k, 13);
 365                color_parse(v, k, wt_status_colors[slot]);
 366        }
 367        if (!strcmp(k, "core.excludesfile")) {
 368                if (!v)
 369                        die("core.excludesfile without value");
 370                excludes_file = xstrdup(v);
 371                return 0;
 372        }
 373        return git_default_config(k, v);
 374}