gout

A static git page generator
git clone https://git.bracken.jp/gout.git
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log.c (3140B)

      1 #include "writer/gopher/log.h"
      2 
      3 #include <assert.h>
      4 #include <err.h>
      5 #include <stdbool.h>
      6 #include <stdint.h>
      7 #include <stdlib.h>
      8 
      9 #include "format.h"
     10 #include "utils.h"
     11 #include "writer/cache/cache.h"
     12 #include "writer/gopher/page.h"
     13 
     14 #include <sys/stat.h>
     15 #include <unistd.h>
     16 
     17 struct GopherLog {
     18   const GitRepo* repo;
     19   const FileSystem* fs;
     20   FILE* out;
     21   Cache* cache;
     22   GopherPage* page;
     23   size_t remaining_commits;
     24   size_t unlogged_commits;
     25 };
     26 
     27 static void write_commit_row(FILE* out, const GitCommit* commit);
     28 
     29 GopherLog* gopher_log_create(const GitRepo* repo, const FileSystem* fs) {
     30   assert(repo != NULL);
     31   assert(fs != NULL);
     32   GopherLog* log = ecalloc(1, sizeof(GopherLog));
     33   log->repo = repo;
     34   log->fs = fs;
     35   log->out = fs->fopen("log.gph", "w");
     36   if (!log->out) {
     37     err(1, "fopen: log.gph");
     38   }
     39   log->page = gopher_page_create(log->out, repo, fs, "Log", "");
     40   log->remaining_commits = SIZE_MAX;
     41   log->unlogged_commits = 0;
     42   return log;
     43 }
     44 
     45 void gopher_log_free(GopherLog* log) {
     46   if (!log) {
     47     return;
     48   }
     49   log->fs->fclose(log->out);
     50   cache_free(log->cache);
     51   gopher_page_free(log->page);
     52   free(log);
     53 }
     54 
     55 void gopher_log_set_cachefile(GopherLog* log, const char* cachefile) {
     56   assert(log != NULL);
     57   assert(cachefile != NULL);
     58   log->cache = cache_open(log->fs, cachefile, write_commit_row);
     59 }
     60 
     61 void gopher_log_set_commit_limit(GopherLog* log, size_t count) {
     62   assert(log != NULL);
     63   log->remaining_commits = count;
     64 }
     65 
     66 bool gopher_log_can_add_commits(const GopherLog* log) {
     67   assert(log != NULL);
     68   return !log->cache || cache_can_add_commits(log->cache);
     69 }
     70 
     71 void gopher_log_begin(GopherLog* log) {
     72   assert(log != NULL);
     73   FILE* out = log->out;
     74   gopher_page_begin(log->page);
     75   fprintf(out, "%-16.16s  ", "Date");
     76   fprintf(out, "%-40.40s  ", "Commit message");
     77   fprintf(out, "%s\n", "Author");
     78 }
     79 
     80 void gopher_log_add_commit(GopherLog* log, const GitCommit* commit) {
     81   assert(log != NULL);
     82   assert(commit != NULL);
     83   if (log->cache) {
     84     cache_add_commit_row(log->cache, commit);
     85   } else if (log->remaining_commits > 0) {
     86     write_commit_row(log->out, commit);
     87     log->remaining_commits--;
     88   } else {
     89     log->unlogged_commits++;
     90   }
     91 }
     92 
     93 void gopher_log_end(GopherLog* log) {
     94   assert(log != NULL);
     95   FILE* out = log->out;
     96   if (log->cache) {
     97     cache_close_and_replace(log->cache, log->out);
     98   } else if (log->unlogged_commits > 0) {
     99     size_t count = log->unlogged_commits;
    100     fprintf(out, "%16.16s  %zu more commits remaining, fetch the repository\n",
    101             "", count);
    102   }
    103   fprintf(out, "\n[0|Atom feed|atom.xml|server|port]\n");
    104   fprintf(out, "[0|Atom feed (tags)|tags.xml|server|port]\n");
    105   gopher_page_end(log->page);
    106 }
    107 
    108 static void write_commit_row(FILE* out, const GitCommit* commit) {
    109   assert(out != NULL);
    110   assert(commit != NULL);
    111   fprintf(out, "[1|");
    112   print_time_short(out, commit->author_time);
    113   fprintf(out, "  ");
    114   const char* summary = commit->summary;
    115   if (summary) {
    116     print_gopher_link_padded(out, summary, 40, ' ');
    117     fprintf(out, "  ");
    118   }
    119   print_gopher_link(out, commit->author_name);
    120   fprintf(out, "|commit/%s.gph|server|port]\n", commit->oid);
    121 }