Andrew's git / gitweb.git / wt-status.c
?
wt-status.con commit git-cvsserver runs hooks/post-receive (cdf6328)
   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";
  25
  26static int parse_status_slot(const char *var, int offset)
  27{
  28        if (!strcasecmp(var+offset, "header"))
  29                return WT_STATUS_HEADER;
  30        if (!strcasecmp(var+offset, "updated")
  31                || !strcasecmp(var+offset, "added"))
  32                return WT_STATUS_UPDATED;
  33        if (!strcasecmp(var+offset, "changed"))
  34                return WT_STATUS_CHANGED;
  35        if (!strcasecmp(var+offset, "untracked"))
  36                return WT_STATUS_UNTRACKED;
  37        die("bad config variable '%s'", var);
  38}
  39
  40static const char* color(int slot)
  41{
  42        return wt_status_use_color ? wt_status_colors[slot] : "";
  43}
  44
  45void wt_status_prepare(struct wt_status *s)
  46{
  47        unsigned char sha1[20];
  48        const char *head;
  49
  50        memset(s, 0, sizeof(*s));
  51        head = resolve_ref("HEAD", sha1, 0, NULL);
  52        s->branch = head ? xstrdup(head) : NULL;
  53        s->reference = "HEAD";
  54        s->fp = stdout;
  55        s->index_file = get_index_file();
  56}
  57
  58static void wt_status_print_cached_header(struct wt_status *s)
  59{
  60        const char *c = color(WT_STATUS_HEADER);
  61        color_fprintf_ln(s->fp, c, "# Changes to be committed:");
  62        if (s->reference) {
  63                color_fprintf_ln(s->fp, c, "#   (use \"git reset %s <file>...\" to unstage)", s->reference);
  64        } else {
  65                color_fprintf_ln(s->fp, c, "#   (use \"git rm --cached <file>...\" to unstage)");
  66        }
  67        color_fprintf_ln(s->fp, c, "#");
  68}
  69
  70static void wt_status_print_header(struct wt_status *s,
  71                                   const char *main, const char *sub)
  72{
  73        const char *c = color(WT_STATUS_HEADER);
  74        color_fprintf_ln(s->fp, c, "# %s:", main);
  75        color_fprintf_ln(s->fp, c, "#   (%s)", sub);
  76        color_fprintf_ln(s->fp, c, "#");
  77}
  78
  79static void wt_status_print_trailer(struct wt_status *s)
  80{
  81        color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
  82}
  83
  84static char *quote_path(const char *in, int len,
  85                        struct strbuf *out, const char *prefix)
  86{
  87        if (len < 0)
  88                len = strlen(in);
  89
  90        strbuf_grow(out, len);
  91        strbuf_setlen(out, 0);
  92        if (prefix) {
  93                int off = 0;
  94                while (prefix[off] && off < len && prefix[off] == in[off])
  95                        if (prefix[off] == '/') {
  96                                prefix += off + 1;
  97                                in += off + 1;
  98                                len -= off + 1;
  99                                off = 0;
 100                        } else
 101                                off++;
 102
 103                for (; *prefix; prefix++)
 104                        if (*prefix == '/')
 105                                strbuf_addstr(out, "../");
 106        }
 107
 108        for ( ; len > 0; in++, len--) {
 109                int ch = *in;
 110
 111                switch (ch) {
 112                case '\n':
 113                        strbuf_addstr(out, "\\n");
 114                        break;
 115                case '\r':
 116                        strbuf_addstr(out, "\\r");
 117                        break;
 118                default:
 119                        strbuf_addch(out, ch);
 120                        continue;
 121                }
 122        }
 123
 124        return out->buf;
 125}
 126
 127static void wt_status_print_filepair(struct wt_status *s,
 128                                     int t, struct diff_filepair *p)
 129{
 130        const char *c = color(t);
 131        const char *one, *two;
 132        struct strbuf onebuf, twobuf;
 133
 134        strbuf_init(&onebuf, 0);
 135        strbuf_init(&twobuf, 0);
 136        one = quote_path(p->one->path, -1, &onebuf, s->prefix);
 137        two = quote_path(p->two->path, -1, &twobuf, s->prefix);
 138
 139        color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 140        switch (p->status) {
 141        case DIFF_STATUS_ADDED:
 142                color_fprintf(s->fp, c, "new file:   %s", one);
 143                break;
 144        case DIFF_STATUS_COPIED:
 145                color_fprintf(s->fp, c, "copied:     %s -> %s", one, two);
 146                break;
 147        case DIFF_STATUS_DELETED:
 148                color_fprintf(s->fp, c, "deleted:    %s", one);
 149                break;
 150        case DIFF_STATUS_MODIFIED:
 151                color_fprintf(s->fp, c, "modified:   %s", one);
 152                break;
 153        case DIFF_STATUS_RENAMED:
 154                color_fprintf(s->fp, c, "renamed:    %s -> %s", one, two);
 155                break;
 156        case DIFF_STATUS_TYPE_CHANGED:
 157                color_fprintf(s->fp, c, "typechange: %s", one);
 158                break;
 159        case DIFF_STATUS_UNKNOWN:
 160                color_fprintf(s->fp, c, "unknown:    %s", one);
 161                break;
 162        case DIFF_STATUS_UNMERGED:
 163                color_fprintf(s->fp, c, "unmerged:   %s", one);
 164                break;
 165        default:
 166                die("bug: unhandled diff status %c", p->status);
 167        }
 168        fprintf(s->fp, "\n");
 169        strbuf_release(&onebuf);
 170        strbuf_release(&twobuf);
 171}
 172
 173static void wt_status_print_updated_cb(struct diff_queue_struct *q,
 174                struct diff_options *options,
 175                void *data)
 176{
 177        struct wt_status *s = data;
 178        int shown_header = 0;
 179        int i;
 180        for (i = 0; i < q->nr; i++) {
 181                if (q->queue[i]->status == 'U')
 182                        continue;
 183                if (!shown_header) {
 184                        wt_status_print_cached_header(s);
 185                        s->commitable = 1;
 186                        shown_header = 1;
 187                }
 188                wt_status_print_filepair(s, WT_STATUS_UPDATED, q->queue[i]);
 189        }
 190        if (shown_header)
 191                wt_status_print_trailer(s);
 192}
 193
 194static void wt_status_print_changed_cb(struct diff_queue_struct *q,
 195                        struct diff_options *options,
 196                        void *data)
 197{
 198        struct wt_status *s = data;
 199        int i;
 200        if (q->nr) {
 201                const char *msg = use_add_msg;
 202                s->workdir_dirty = 1;
 203                for (i = 0; i < q->nr; i++)
 204                        if (q->queue[i]->status == DIFF_STATUS_DELETED) {
 205                                msg = use_add_rm_msg;
 206                                break;
 207                        }
 208                wt_status_print_header(s, "Changed but not updated", msg);
 209        }
 210        for (i = 0; i < q->nr; i++)
 211                wt_status_print_filepair(s, WT_STATUS_CHANGED, q->queue[i]);
 212        if (q->nr)
 213                wt_status_print_trailer(s);
 214}
 215
 216static void wt_read_cache(struct wt_status *s)
 217{
 218        discard_cache();
 219        read_cache_from(s->index_file);
 220}
 221
 222static void wt_status_print_initial(struct wt_status *s)
 223{
 224        int i;
 225        struct strbuf buf;
 226
 227        strbuf_init(&buf, 0);
 228        wt_read_cache(s);
 229        if (active_nr) {
 230                s->commitable = 1;
 231                wt_status_print_cached_header(s);
 232        }
 233        for (i = 0; i < active_nr; i++) {
 234                color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 235                color_fprintf_ln(s->fp, color(WT_STATUS_UPDATED), "new file: %s",
 236                                quote_path(active_cache[i]->name, -1,
 237                                           &buf, s->prefix));
 238        }
 239        if (active_nr)
 240                wt_status_print_trailer(s);
 241        strbuf_release(&buf);
 242}
 243
 244static void wt_status_print_updated(struct wt_status *s)
 245{
 246        struct rev_info rev;
 247        init_revisions(&rev, NULL);
 248        setup_revisions(0, NULL, &rev, s->reference);
 249        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 250        rev.diffopt.format_callback = wt_status_print_updated_cb;
 251        rev.diffopt.format_callback_data = s;
 252        rev.diffopt.detect_rename = 1;
 253        rev.diffopt.rename_limit = 100;
 254        rev.diffopt.break_opt = 0;
 255        wt_read_cache(s);
 256        run_diff_index(&rev, 1);
 257}
 258
 259static void wt_status_print_changed(struct wt_status *s)
 260{
 261        struct rev_info rev;
 262        init_revisions(&rev, "");
 263        setup_revisions(0, NULL, &rev, NULL);
 264        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 265        rev.diffopt.format_callback = wt_status_print_changed_cb;
 266        rev.diffopt.format_callback_data = s;
 267        wt_read_cache(s);
 268        run_diff_files(&rev, 0);
 269}
 270
 271static void wt_status_print_untracked(struct wt_status *s)
 272{
 273        struct dir_struct dir;
 274        int i;
 275        int shown_header = 0;
 276        struct strbuf buf;
 277
 278        strbuf_init(&buf, 0);
 279        memset(&dir, 0, sizeof(dir));
 280
 281        if (!s->untracked) {
 282                dir.show_other_directories = 1;
 283                dir.hide_empty_directories = 1;
 284        }
 285        setup_standard_excludes(&dir);
 286
 287        read_directory(&dir, ".", "", 0, NULL);
 288        for(i = 0; i < dir.nr; i++) {
 289                /* check for matching entry, which is unmerged; lifted from
 290                 * builtin-ls-files:show_other_files */
 291                struct dir_entry *ent = dir.entries[i];
 292                int pos = cache_name_pos(ent->name, ent->len);
 293                struct cache_entry *ce;
 294                if (0 <= pos)
 295                        die("bug in wt_status_print_untracked");
 296                pos = -pos - 1;
 297                if (pos < active_nr) {
 298                        ce = active_cache[pos];
 299                        if (ce_namelen(ce) == ent->len &&
 300                            !memcmp(ce->name, ent->name, ent->len))
 301                                continue;
 302                }
 303                if (!shown_header) {
 304                        s->workdir_untracked = 1;
 305                        wt_status_print_header(s, "Untracked files",
 306                                               use_add_to_include_msg);
 307                        shown_header = 1;
 308                }
 309                color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 310                color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED), "%s",
 311                                quote_path(ent->name, ent->len,
 312                                        &buf, s->prefix));
 313        }
 314        strbuf_release(&buf);
 315}
 316
 317static void wt_status_print_verbose(struct wt_status *s)
 318{
 319        struct rev_info rev;
 320        int saved_stdout;
 321
 322        fflush(s->fp);
 323
 324        /* Sigh, the entire diff machinery is hardcoded to output to
 325         * stdout.  Do the dup-dance...*/
 326        saved_stdout = dup(STDOUT_FILENO);
 327        if (saved_stdout < 0 ||dup2(fileno(s->fp), STDOUT_FILENO) < 0)
 328                die("couldn't redirect stdout\n");
 329
 330        init_revisions(&rev, NULL);
 331        setup_revisions(0, NULL, &rev, s->reference);
 332        rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 333        rev.diffopt.detect_rename = 1;
 334        wt_read_cache(s);
 335        run_diff_index(&rev, 1);
 336
 337        fflush(stdout);
 338
 339        if (dup2(saved_stdout, STDOUT_FILENO) < 0)
 340                die("couldn't restore stdout\n");
 341        close(saved_stdout);
 342}
 343
 344void wt_status_print(struct wt_status *s)
 345{
 346        unsigned char sha1[20];
 347        s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
 348
 349        if (s->branch) {
 350                const char *on_what = "On branch ";
 351                const char *branch_name = s->branch;
 352                if (!prefixcmp(branch_name, "refs/heads/"))
 353                        branch_name += 11;
 354                else if (!strcmp(branch_name, "HEAD")) {
 355                        branch_name = "";
 356                        on_what = "Not currently on any branch.";
 357                }
 358                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER),
 359                        "# %s%s", on_what, branch_name);
 360        }
 361
 362        if (s->is_initial) {
 363                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
 364                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "# Initial commit");
 365                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
 366                wt_status_print_initial(s);
 367        }
 368        else {
 369                wt_status_print_updated(s);
 370        }
 371
 372        wt_status_print_changed(s);
 373        wt_status_print_untracked(s);
 374
 375        if (s->verbose && !s->is_initial)
 376                wt_status_print_verbose(s);
 377        if (!s->commitable) {
 378                if (s->amend)
 379                        fprintf(s->fp, "# No changes\n");
 380                else if (s->workdir_dirty)
 381                        printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
 382                else if (s->workdir_untracked)
 383                        printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
 384                else if (s->is_initial)
 385                        printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
 386                else
 387                        printf("nothing to commit (working directory clean)\n");
 388        }
 389}
 390
 391int git_status_config(const char *k, const char *v)
 392{
 393        if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
 394                wt_status_use_color = git_config_colorbool(k, v);
 395                return 0;
 396        }
 397        if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
 398                int slot = parse_status_slot(k, 13);
 399                color_parse(v, k, wt_status_colors[slot]);
 400        }
 401        return git_default_config(k, v);
 402}