builtin / shortlog.con commit Merge branch 'mk/mingw-winansi-ttyname-termination-fix' (c5139e0)
   1#include "builtin.h"
   2#include "cache.h"
   3#include "commit.h"
   4#include "diff.h"
   5#include "string-list.h"
   6#include "revision.h"
   7#include "utf8.h"
   8#include "mailmap.h"
   9#include "shortlog.h"
  10#include "parse-options.h"
  11
  12static char const * const shortlog_usage[] = {
  13        N_("git shortlog [<options>] [<revision-range>] [[--] [<path>...]]"),
  14        NULL
  15};
  16
  17/*
  18 * The util field of our string_list_items will contain one of two things:
  19 *
  20 *   - if --summary is not in use, it will point to a string list of the
  21 *     oneline subjects assigned to this author
  22 *
  23 *   - if --summary is in use, we don't need that list; we only need to know
  24 *     its size. So we abuse the pointer slot to store our integer counter.
  25 *
  26 *  This macro accesses the latter.
  27 */
  28#define UTIL_TO_INT(x) ((intptr_t)(x)->util)
  29
  30static int compare_by_counter(const void *a1, const void *a2)
  31{
  32        const struct string_list_item *i1 = a1, *i2 = a2;
  33        return UTIL_TO_INT(i2) - UTIL_TO_INT(i1);
  34}
  35
  36static int compare_by_list(const void *a1, const void *a2)
  37{
  38        const struct string_list_item *i1 = a1, *i2 = a2;
  39        const struct string_list *l1 = i1->util, *l2 = i2->util;
  40
  41        if (l1->nr < l2->nr)
  42                return 1;
  43        else if (l1->nr == l2->nr)
  44                return 0;
  45        else
  46                return -1;
  47}
  48
  49static void insert_one_record(struct shortlog *log,
  50                              const char *author,
  51                              const char *oneline)
  52{
  53        struct string_list_item *item;
  54        const char *mailbuf, *namebuf;
  55        size_t namelen, maillen;
  56        struct strbuf namemailbuf = STRBUF_INIT;
  57        struct ident_split ident;
  58
  59        if (split_ident_line(&ident, author, strlen(author)))
  60                return;
  61
  62        namebuf = ident.name_begin;
  63        mailbuf = ident.mail_begin;
  64        namelen = ident.name_end - ident.name_begin;
  65        maillen = ident.mail_end - ident.mail_begin;
  66
  67        map_user(&log->mailmap, &mailbuf, &maillen, &namebuf, &namelen);
  68        strbuf_add(&namemailbuf, namebuf, namelen);
  69
  70        if (log->email)
  71                strbuf_addf(&namemailbuf, " <%.*s>", (int)maillen, mailbuf);
  72
  73        item = string_list_insert(&log->list, namemailbuf.buf);
  74
  75        if (log->summary)
  76                item->util = (void *)(UTIL_TO_INT(item) + 1);
  77        else {
  78                const char *dot3 = log->common_repo_prefix;
  79                char *buffer, *p;
  80                struct strbuf subject = STRBUF_INIT;
  81                const char *eol;
  82
  83                /* Skip any leading whitespace, including any blank lines. */
  84                while (*oneline && isspace(*oneline))
  85                        oneline++;
  86                eol = strchr(oneline, '\n');
  87                if (!eol)
  88                        eol = oneline + strlen(oneline);
  89                if (starts_with(oneline, "[PATCH")) {
  90                        char *eob = strchr(oneline, ']');
  91                        if (eob && (!eol || eob < eol))
  92                                oneline = eob + 1;
  93                }
  94                while (*oneline && isspace(*oneline) && *oneline != '\n')
  95                        oneline++;
  96                format_subject(&subject, oneline, " ");
  97                buffer = strbuf_detach(&subject, NULL);
  98
  99                if (dot3) {
 100                        int dot3len = strlen(dot3);
 101                        if (dot3len > 5) {
 102                                while ((p = strstr(buffer, dot3)) != NULL) {
 103                                        int taillen = strlen(p) - dot3len;
 104                                        memcpy(p, "/.../", 5);
 105                                        memmove(p + 5, p + dot3len, taillen + 1);
 106                                }
 107                        }
 108                }
 109
 110                if (item->util == NULL)
 111                        item->util = xcalloc(1, sizeof(struct string_list));
 112                string_list_append(item->util, buffer);
 113        }
 114}
 115
 116static void read_from_stdin(struct shortlog *log)
 117{
 118        struct strbuf author = STRBUF_INIT;
 119        struct strbuf oneline = STRBUF_INIT;
 120
 121        while (strbuf_getline_lf(&author, stdin) != EOF) {
 122                const char *v;
 123                if (!skip_prefix(author.buf, "Author: ", &v) &&
 124                    !skip_prefix(author.buf, "author ", &v))
 125                        continue;
 126                while (strbuf_getline_lf(&oneline, stdin) != EOF &&
 127                       oneline.len)
 128                        ; /* discard headers */
 129                while (strbuf_getline_lf(&oneline, stdin) != EOF &&
 130                       !oneline.len)
 131                        ; /* discard blanks */
 132                insert_one_record(log, v, oneline.buf);
 133        }
 134        strbuf_release(&author);
 135        strbuf_release(&oneline);
 136}
 137
 138void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 139{
 140        struct strbuf author = STRBUF_INIT;
 141        struct strbuf oneline = STRBUF_INIT;
 142        struct pretty_print_context ctx = {0};
 143
 144        ctx.fmt = CMIT_FMT_USERFORMAT;
 145        ctx.abbrev = log->abbrev;
 146        ctx.subject = "";
 147        ctx.after_subject = "";
 148        ctx.date_mode.type = DATE_NORMAL;
 149        ctx.output_encoding = get_log_output_encoding();
 150
 151        format_commit_message(commit, "%an <%ae>", &author, &ctx);
 152        if (!log->summary) {
 153                if (log->user_format)
 154                        pretty_print_commit(&ctx, commit, &oneline);
 155                else
 156                        format_commit_message(commit, "%s", &oneline, &ctx);
 157        }
 158
 159        insert_one_record(log, author.buf, oneline.len ? oneline.buf : "<none>");
 160
 161        strbuf_release(&author);
 162        strbuf_release(&oneline);
 163}
 164
 165static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 166{
 167        struct commit *commit;
 168
 169        if (prepare_revision_walk(rev))
 170                die(_("revision walk setup failed"));
 171        while ((commit = get_revision(rev)) != NULL)
 172                shortlog_add_commit(log, commit);
 173}
 174
 175static int parse_uint(char const **arg, int comma, int defval)
 176{
 177        unsigned long ul;
 178        int ret;
 179        char *endp;
 180
 181        ul = strtoul(*arg, &endp, 10);
 182        if (*endp && *endp != comma)
 183                return -1;
 184        if (ul > INT_MAX)
 185                return -1;
 186        ret = *arg == endp ? defval : (int)ul;
 187        *arg = *endp ? endp + 1 : endp;
 188        return ret;
 189}
 190
 191static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
 192#define DEFAULT_WRAPLEN 76
 193#define DEFAULT_INDENT1 6
 194#define DEFAULT_INDENT2 9
 195
 196static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
 197{
 198        struct shortlog *log = opt->value;
 199
 200        log->wrap_lines = !unset;
 201        if (unset)
 202                return 0;
 203        if (!arg) {
 204                log->wrap = DEFAULT_WRAPLEN;
 205                log->in1 = DEFAULT_INDENT1;
 206                log->in2 = DEFAULT_INDENT2;
 207                return 0;
 208        }
 209
 210        log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
 211        log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
 212        log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
 213        if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
 214                return error(wrap_arg_usage);
 215        if (log->wrap &&
 216            ((log->in1 && log->wrap <= log->in1) ||
 217             (log->in2 && log->wrap <= log->in2)))
 218                return error(wrap_arg_usage);
 219        return 0;
 220}
 221
 222void shortlog_init(struct shortlog *log)
 223{
 224        memset(log, 0, sizeof(*log));
 225
 226        read_mailmap(&log->mailmap, &log->common_repo_prefix);
 227
 228        log->list.strdup_strings = 1;
 229        log->wrap = DEFAULT_WRAPLEN;
 230        log->in1 = DEFAULT_INDENT1;
 231        log->in2 = DEFAULT_INDENT2;
 232}
 233
 234int cmd_shortlog(int argc, const char **argv, const char *prefix)
 235{
 236        struct shortlog log = { STRING_LIST_INIT_NODUP };
 237        struct rev_info rev;
 238        int nongit = !startup_info->have_repository;
 239
 240        const struct option options[] = {
 241                OPT_BOOL('n', "numbered", &log.sort_by_number,
 242                         N_("sort output according to the number of commits per author")),
 243                OPT_BOOL('s', "summary", &log.summary,
 244                         N_("Suppress commit descriptions, only provides commit count")),
 245                OPT_BOOL('e', "email", &log.email,
 246                         N_("Show the email address of each author")),
 247                { OPTION_CALLBACK, 'w', NULL, &log, N_("w[,i1[,i2]]"),
 248                        N_("Linewrap output"), PARSE_OPT_OPTARG, &parse_wrap_args },
 249                OPT_END(),
 250        };
 251
 252        struct parse_opt_ctx_t ctx;
 253
 254        git_config(git_default_config, NULL);
 255        shortlog_init(&log);
 256        init_revisions(&rev, prefix);
 257        parse_options_start(&ctx, argc, argv, prefix, options,
 258                            PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
 259
 260        for (;;) {
 261                switch (parse_options_step(&ctx, options, shortlog_usage)) {
 262                case PARSE_OPT_HELP:
 263                        exit(129);
 264                case PARSE_OPT_DONE:
 265                        goto parse_done;
 266                }
 267                parse_revision_opt(&rev, &ctx, options, shortlog_usage);
 268        }
 269parse_done:
 270        argc = parse_options_end(&ctx);
 271
 272        if (setup_revisions(argc, argv, &rev, NULL) != 1) {
 273                error(_("unrecognized argument: %s"), argv[1]);
 274                usage_with_options(shortlog_usage, options);
 275        }
 276
 277        log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
 278        log.abbrev = rev.abbrev;
 279        log.file = rev.diffopt.file;
 280
 281        /* assume HEAD if from a tty */
 282        if (!nongit && !rev.pending.nr && isatty(0))
 283                add_head_to_pending(&rev);
 284        if (rev.pending.nr == 0) {
 285                if (isatty(0))
 286                        fprintf(stderr, _("(reading log message from standard input)\n"));
 287                read_from_stdin(&log);
 288        }
 289        else
 290                get_from_rev(&rev, &log);
 291
 292        shortlog_output(&log);
 293        if (log.file != stdout)
 294                fclose(log.file);
 295        return 0;
 296}
 297
 298static void add_wrapped_shortlog_msg(struct strbuf *sb, const char *s,
 299                                     const struct shortlog *log)
 300{
 301        strbuf_add_wrapped_text(sb, s, log->in1, log->in2, log->wrap);
 302        strbuf_addch(sb, '\n');
 303}
 304
 305void shortlog_output(struct shortlog *log)
 306{
 307        int i, j;
 308        struct strbuf sb = STRBUF_INIT;
 309
 310        if (log->sort_by_number)
 311                QSORT(log->list.items, log->list.nr,
 312                      log->summary ? compare_by_counter : compare_by_list);
 313        for (i = 0; i < log->list.nr; i++) {
 314                const struct string_list_item *item = &log->list.items[i];
 315                if (log->summary) {
 316                        fprintf(log->file, "%6d\t%s\n",
 317                                (int)UTIL_TO_INT(item), item->string);
 318                } else {
 319                        struct string_list *onelines = item->util;
 320                        fprintf(log->file, "%s (%d):\n",
 321                                item->string, onelines->nr);
 322                        for (j = onelines->nr - 1; j >= 0; j--) {
 323                                const char *msg = onelines->items[j].string;
 324
 325                                if (log->wrap_lines) {
 326                                        strbuf_reset(&sb);
 327                                        add_wrapped_shortlog_msg(&sb, msg, log);
 328                                        fwrite(sb.buf, sb.len, 1, log->file);
 329                                }
 330                                else
 331                                        fprintf(log->file, "      %s\n", msg);
 332                        }
 333                        putc('\n', log->file);
 334                        onelines->strdup_strings = 1;
 335                        string_list_clear(onelines, 0);
 336                        free(onelines);
 337                }
 338
 339                log->list.items[i].util = NULL;
 340        }
 341
 342        strbuf_release(&sb);
 343        log->list.strdup_strings = 1;
 344        string_list_clear(&log->list, 1);
 345        clear_mailmap(&log->mailmap);
 346}