optimization: read stats once and remember it
for an initial run and new commits this speeds stagit up a bit: on an initial run of sbase goes from about 4 seconds to 2.8 on my machine. now we can't use statsbuf, so create the stats string ourselves, while at it color the + and - using a style (can be disabled for the color-haters out there ;)).
This commit is contained in:
Hiltjo Posthuma
parent
0bc47da0f7
commit
914880f31b
186
stagit.c
186
stagit.c
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@ -15,6 +15,13 @@
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#include "compat.h"
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#include "config.h"
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struct deltainfo {
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git_patch *patch;
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size_t addcount;
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size_t delcount;
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};
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struct commitinfo {
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const git_oid *id;
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@ -25,16 +32,18 @@ struct commitinfo {
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const char *summary;
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const char *msg;
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git_diff_stats *stats;
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git_diff *diff;
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git_commit *commit;
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git_commit *parent;
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git_tree *commit_tree;
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git_tree *parent_tree;
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git_diff *diff;
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git_commit *commit;
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git_commit *parent;
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git_tree *commit_tree;
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git_tree *parent_tree;
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size_t addcount;
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size_t delcount;
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size_t filecount;
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struct deltainfo **deltas;
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size_t ndeltas;
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};
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static git_repository *repo;
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@ -48,13 +57,96 @@ static char description[255];
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static char cloneurl[1024];
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static int haslicense, hasreadme, hassubmodules;
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void
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deltainfo_free(struct deltainfo *di)
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{
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if (!di)
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return;
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git_patch_free(di->patch);
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di->patch = NULL;
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free(di);
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}
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int
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commitinfo_getstats(struct commitinfo *ci)
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{
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struct deltainfo *di;
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const git_diff_delta *delta;
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const git_diff_hunk *hunk;
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const git_diff_line *line;
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git_patch *patch = NULL;
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size_t ndeltas, nhunks, nhunklines;
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size_t i, j, k;
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ndeltas = git_diff_num_deltas(ci->diff);
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if (ndeltas && !(ci->deltas = calloc(ndeltas, sizeof(struct deltainfo *))))
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err(1, "calloc");
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for (i = 0; i < ndeltas; i++) {
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if (!(di = calloc(1, sizeof(struct deltainfo))))
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err(1, "calloc");
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if (git_patch_from_diff(&patch, ci->diff, i)) {
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git_patch_free(patch);
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goto err;
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}
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di->patch = patch;
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ci->deltas[i] = di;
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delta = git_patch_get_delta(patch);
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/* check binary data */
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if (delta->flags & GIT_DIFF_FLAG_BINARY)
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continue;
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nhunks = git_patch_num_hunks(patch);
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for (j = 0; j < nhunks; j++) {
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if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
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break;
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for (k = 0; ; k++) {
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if (git_patch_get_line_in_hunk(&line, patch, j, k))
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break;
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if (line->old_lineno == -1) {
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di->addcount++;
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ci->addcount++;
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} else if (line->new_lineno == -1) {
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di->delcount++;
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ci->delcount++;
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}
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}
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}
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}
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ci->ndeltas = i;
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ci->filecount = i;
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return 0;
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err:
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if (ci->deltas)
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for (i = 0; i < ci->ndeltas; i++)
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deltainfo_free(ci->deltas[i]);
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free(ci->deltas);
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ci->deltas = NULL;
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ci->ndeltas = 0;
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ci->addcount = 0;
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ci->delcount = 0;
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ci->filecount = 0;
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return -1;
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}
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void
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commitinfo_free(struct commitinfo *ci)
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{
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size_t i;
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if (!ci)
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return;
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git_diff_stats_free(ci->stats);
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if (ci->deltas)
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for (i = 0; i < ci->ndeltas; i++)
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deltainfo_free(ci->deltas[i]);
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free(ci->deltas);
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ci->deltas = NULL;
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git_diff_free(ci->diff);
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git_tree_free(ci->commit_tree);
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git_tree_free(ci->parent_tree);
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@ -66,6 +158,7 @@ commitinfo_getbyoid(const git_oid *id)
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{
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struct commitinfo *ci;
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git_diff_options opts;
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const git_oid *oid;
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int error;
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if (!(ci = calloc(1, sizeof(struct commitinfo))))
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@ -82,26 +175,24 @@ commitinfo_getbyoid(const git_oid *id)
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ci->summary = git_commit_summary(ci->commit);
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ci->msg = git_commit_message(ci->commit);
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if ((error = git_commit_tree(&(ci->commit_tree), ci->commit)))
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oid = git_commit_tree_id(ci->commit);
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if ((error = git_tree_lookup(&(ci->commit_tree), repo, oid)))
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goto err;
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if (!(error = git_commit_parent(&(ci->parent), ci->commit, 0))) {
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if ((error = git_commit_tree(&(ci->parent_tree), ci->parent)))
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goto err;
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} else {
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ci->parent = NULL;
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ci->parent_tree = NULL;
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oid = git_commit_tree_id(ci->parent);
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if ((error = git_tree_lookup(&(ci->parent_tree), repo, oid))) {
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ci->parent = NULL;
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ci->parent_tree = NULL;
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}
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}
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git_diff_init_options(&opts, GIT_DIFF_OPTIONS_VERSION);
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opts.flags |= GIT_DIFF_DISABLE_PATHSPEC_MATCH;
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if ((error = git_diff_tree_to_tree(&(ci->diff), repo, ci->parent_tree, ci->commit_tree, &opts)))
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goto err;
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if (git_diff_get_stats(&(ci->stats), ci->diff))
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goto err;
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ci->addcount = git_diff_stats_insertions(ci->stats);
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ci->delcount = git_diff_stats_deletions(ci->stats);
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ci->filecount = git_diff_stats_files_changed(ci->stats);
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if (commitinfo_getstats(ci) == -1)
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goto err;
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return ci;
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@ -332,33 +423,55 @@ printshowfile(FILE *fp, struct commitinfo *ci)
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const git_diff_hunk *hunk;
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const git_diff_line *line;
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git_patch *patch;
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git_buf statsbuf;
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size_t ndeltas, nhunks, nhunklines;
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size_t nhunks, nhunklines, changed, add, del, total;
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size_t i, j, k;
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char linestr[80];
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printcommit(fp, ci);
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memset(&statsbuf, 0, sizeof(statsbuf));
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if (!ci->deltas)
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return;
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/* diff stat */
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if (ci->stats &&
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!git_diff_stats_to_buf(&statsbuf, ci->stats,
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GIT_DIFF_STATS_FULL | GIT_DIFF_STATS_SHORT, 80)) {
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if (statsbuf.ptr && statsbuf.ptr[0]) {
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fputs("<b>Diffstat:</b>\n", fp);
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xmlencode(fp, statsbuf.ptr, strlen(statsbuf.ptr));
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fputs("<b>Diffstat:</b>\n<table>", fp);
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for (i = 0; i < ci->ndeltas; i++) {
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delta = git_patch_get_delta(ci->deltas[i]->patch);
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fputs("<tr><td>", fp);
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xmlencode(fp, delta->old_file.path, strlen(delta->old_file.path));
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if (strcmp(delta->old_file.path, delta->new_file.path)) {
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fputs(" -> ", fp);
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xmlencode(fp, delta->new_file.path, strlen(delta->new_file.path));
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}
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add = ci->deltas[i]->addcount;
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del = ci->deltas[i]->delcount;
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changed = add + del;
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total = sizeof(linestr) - 2;
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if (changed > total) {
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if (add)
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add = ((float)total / changed * add) + 1;
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if (del)
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del = ((float)total / changed * del) + 1;
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}
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memset(&linestr, '+', add);
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memset(&linestr[add], '-', del);
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fprintf(fp, "</td><td> | %zu <span class=\"i\">",
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ci->deltas[i]->addcount + ci->deltas[i]->delcount);
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fwrite(&linestr, 1, add, fp);
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fputs("</span><span class=\"d\">", fp);
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fwrite(&linestr[add], 1, del, fp);
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fputs("</span></td></tr>\n", fp);
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}
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fprintf(fp, "</table>%zu file%s changed, %zu insertion%s(+), %zu deletion%s(-)\n",
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ci->filecount, ci->filecount == 1 ? "" : "s",
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ci->addcount, ci->addcount == 1 ? "" : "s",
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ci->delcount, ci->delcount == 1 ? "" : "s");
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fputs("<hr/>", fp);
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ndeltas = git_diff_num_deltas(ci->diff);
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for (i = 0; i < ndeltas; i++) {
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if (git_patch_from_diff(&patch, ci->diff, i)) {
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git_patch_free(patch);
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break;
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}
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for (i = 0; i < ci->ndeltas; i++) {
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patch = ci->deltas[i]->patch;
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delta = git_patch_get_delta(patch);
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fprintf(fp, "<b>diff --git a/<a href=\"%sfile/%s.html\">%s</a> b/<a href=\"%sfile/%s.html\">%s</a></b>\n",
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relpath, delta->old_file.path, delta->old_file.path,
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@ -367,7 +480,6 @@ printshowfile(FILE *fp, struct commitinfo *ci)
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/* check binary data */
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if (delta->flags & GIT_DIFF_FLAG_BINARY) {
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fputs("Binary files differ\n", fp);
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git_patch_free(patch);
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continue;
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}
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@ -396,11 +508,7 @@ printshowfile(FILE *fp, struct commitinfo *ci)
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fputs("</a>", fp);
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}
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}
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git_patch_free(patch);
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}
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git_buf_free(&statsbuf);
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return;
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}
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int
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