stagit

custom fork of stagit
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commit 9c1862ccdacddee9b8a324a8d4a67d18c5ab7d93
parent 1b4f30ba2e66133139f225cb536ba2c6ed62ff36
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Mon,  7 Dec 2015 23:00:07 +0100

rework code, "cache" commit data in struct commitinfo

Diffstat:
Murmoms.c | 353+++++++++++++++++++++++++++++++++++++++----------------------------------------
1 file changed, 175 insertions(+), 178 deletions(-)
diff --git a/urmoms.c b/urmoms.c
@@ -11,6 +11,28 @@
 
 #include "git2.h"
 
+struct commitinfo {
+    const git_oid *id;
+
+    char oid[GIT_OID_HEXSZ + 1];
+    char parentoid[GIT_OID_HEXSZ + 1];
+
+    const git_signature *author;
+    const char *summary;
+    const char *msg;
+
+    git_diff_stats *stats;
+    git_diff       *diff;
+    git_commit     *commit;
+    git_commit     *parent;
+    git_tree       *commit_tree;
+    git_tree       *parent_tree;
+
+    size_t addcount;
+    size_t delcount;
+    size_t filecount;
+};
+
 static git_repository *repo;
 
 static const char *relpath = "";
@@ -20,6 +42,69 @@ static char name[255];
 static char description[255];
 static int hasreadme, haslicense;
 
+void
+commitinfo_free(struct commitinfo *ci)
+{
+    if (!ci)
+        return;
+
+    /* TODO: print error ? */
+    git_diff_stats_free(ci->stats);
+    git_diff_free(ci->diff);
+    git_commit_free(ci->commit);
+}
+
+struct commitinfo *
+commitinfo_getbyoid(const git_oid *id)
+{
+    struct commitinfo *ci;
+    int error;
+
+    if (!(ci = calloc(1, sizeof(struct commitinfo))))
+        err(1, "calloc");
+
+    ci->id = id;
+    if (git_commit_lookup(&(ci->commit), repo, id))
+        goto err;
+
+    /* TODO: show tags when commit has it */
+    git_oid_tostr(ci->oid, sizeof(ci->oid), git_commit_id(ci->commit));
+    git_oid_tostr(ci->parentoid, sizeof(ci->parentoid), git_commit_parent_id(ci->commit, 0));
+
+    ci->author = git_commit_author(ci->commit);
+    ci->summary = git_commit_summary(ci->commit);
+    ci->msg = git_commit_message(ci->commit);
+
+    if ((error = git_commit_tree(&(ci->commit_tree), ci->commit)))
+        goto err; /* TODO: handle error */
+    if (!(error = git_commit_parent(&(ci->parent), ci->commit, 0))) {
+        if ((error = git_commit_tree(&(ci->parent_tree), ci->parent)))
+            goto err;
+    } else {
+        ci->parent = NULL;
+        ci->parent_tree = NULL;
+    }
+
+    if ((error = git_diff_tree_to_tree(&(ci->diff), repo, ci->parent_tree, ci->commit_tree, NULL)))
+        goto err;
+    if (git_diff_get_stats(&(ci->stats), ci->diff))
+        goto err;
+
+    ci->addcount = git_diff_stats_insertions(ci->stats);
+    ci->delcount = git_diff_stats_deletions(ci->stats);
+    ci->filecount = git_diff_stats_files_changed(ci->stats);
+
+    /* TODO: show tag when commit has it */
+
+    return ci;
+
+err:
+    commitinfo_free(ci);
+    free(ci);
+
+    return NULL;
+}
+
 int
 writeheader(FILE *fp)
 {
@@ -156,22 +241,23 @@ printtime(FILE *fp, const git_time *intime)
 }
 
 void
-printcommit(FILE *fp, git_commit *commit)
+writeblobhtml(FILE *fp, const git_blob *blob)
 {
-    const git_signature *sig;
-    char buf[GIT_OID_HEXSZ + 1];
-    int i, count;
-    const char *msg;
+    xmlencode(fp, git_blob_rawcontent(blob), (size_t)git_blob_rawsize(blob));
+}
 
+void
+printcommit(FILE *fp, struct commitinfo *ci)
+{
     /* TODO: show tag when commit has it */
-    git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
     fprintf(fp, "<b>commit</b> <a href=\"%scommit/%s.html\">%s</a>\n",
-        relpath, buf, buf);
+        relpath, ci->oid, ci->oid);
 
-    if (git_oid_tostr(buf, sizeof(buf), git_commit_parent_id(commit, 0)) && buf[0])
+    if (ci->parentoid[0])
         fprintf(fp, "<b>parent</b> <a href=\"%scommit/%s.html\">%s</a>\n",
-            relpath, buf, buf);
+            relpath, ci->parentoid, ci->parentoid);
 
+#if 0
     if ((count = (int)git_commit_parentcount(commit)) > 1) {
         fprintf(fp, "<b>Merge:</b>");
         for (i = 0; i < count; i++) {
@@ -181,81 +267,66 @@ printcommit(FILE *fp, git_commit *commit)
         }
         fputc('\n', fp);
     }
-    if ((sig = git_commit_author(commit)) != NULL) {
+#endif
+    if (ci->author) {
         fprintf(fp, "<b>Author:</b> ");
-        xmlencode(fp, sig->name, strlen(sig->name));
+        xmlencode(fp, ci->author->name, strlen(ci->author->name));
         fprintf(fp, " &lt;<a href=\"mailto:");
-        xmlencode(fp, sig->email, strlen(sig->email));
+        xmlencode(fp, ci->author->email, strlen(ci->author->email));
         fputs("\">", fp);
-        xmlencode(fp, sig->email, strlen(sig->email));
+        xmlencode(fp, ci->author->email, strlen(ci->author->email));
         fputs("</a>&gt;\n<b>Date:</b>   ", fp);
-        printtime(fp, &sig->when);
+        printtime(fp, &(ci->author->when));
         fputc('\n', fp);
     }
     fputc('\n', fp);
 
-    if ((msg = git_commit_message(commit)))
-        xmlencode(fp, msg, strlen(msg));
+    if (ci->msg)
+        xmlencode(fp, ci->msg, strlen(ci->msg));
+
     fputc('\n', fp);
 }
 
 void
-printshowfile(git_commit *commit)
+printshowfile(struct commitinfo *ci)
 {
-    const git_diff_delta *delta = NULL;
-    const git_diff_hunk *hunk = NULL;
-    const git_diff_line *line = NULL;
-    git_commit *parent = NULL;
-    git_tree *commit_tree = NULL, *parent_tree = NULL;
-    git_patch *patch = NULL;
-    git_diff *diff = NULL;
-    git_diff_stats *diffstats = NULL;
-    git_buf diffstatsbuf;
+    const git_diff_delta *delta;
+    const git_diff_hunk *hunk;
+    const git_diff_line *line;
+    git_patch *patch;
+    git_buf statsbuf;
+    size_t ndeltas, nhunks, nhunklines;
     FILE *fp;
-    size_t i, j, k, ndeltas, nhunks = 0, nhunklines = 0;
-    char buf[GIT_OID_HEXSZ + 1], path[PATH_MAX];
-    int error;
+    size_t i, j, k;
+    char path[PATH_MAX];
 
-    git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
-    if (!buf[0])
-        return;
-    snprintf(path, sizeof(path), "commit/%s.html", buf);
+    snprintf(path, sizeof(path), "commit/%s.html", ci->oid);
     /* check if file exists if so skip it */
     if (!access(path, F_OK))
         return;
 
-    memset(&diffstatsbuf, 0, sizeof(diffstatsbuf));
-
     fp = efopen(path, "w+b");
     writeheader(fp);
-    printcommit(fp, commit);
+    printcommit(fp, ci);
 
-    if ((error = git_commit_tree(&commit_tree, commit)))
-        goto err;
-    if (!(error = git_commit_parent(&parent, commit, 0))) {
-        if ((error = git_commit_tree(&parent_tree, parent)))
-            goto err; /* TODO: handle error */
-    } else {
-        parent = NULL;
-        parent_tree = NULL;
-    }
-    if ((error = git_diff_tree_to_tree(&diff, repo, parent_tree, commit_tree, NULL)))
-        goto err;
+    memset(&statsbuf, 0, sizeof(statsbuf));
 
     /* diff stat */
-    if (!git_diff_get_stats(&diffstats, diff)) {
-        if (!git_diff_stats_to_buf(&diffstatsbuf, diffstats,
+    if (ci->stats) {
+        if (!git_diff_stats_to_buf(&statsbuf, ci->stats,
             GIT_DIFF_STATS_FULL | GIT_DIFF_STATS_SHORT, 80)) {
-            fprintf(fp, "<b>Diffstat:</b>\n");
-            fputs(diffstatsbuf.ptr, fp);
+            if (statsbuf.ptr && statsbuf.ptr[0]) {
+                fprintf(fp, "<b>Diffstat:</b>\n");
+                fputs(statsbuf.ptr, fp);
+            }
         }
-        git_diff_stats_free(diffstats);
     }
+
     fputs("<hr/>", fp);
 
-    ndeltas = git_diff_num_deltas(diff);
+    ndeltas = git_diff_num_deltas(ci->diff);
     for (i = 0; i < ndeltas; i++) {
-        if (git_patch_from_diff(&patch, diff, i)) {
+        if (git_patch_from_diff(&patch, ci->diff, i)) {
             git_patch_free(patch);
             break; /* TODO: handle error */
         }
@@ -265,26 +336,6 @@ printshowfile(git_commit *commit)
             relpath, delta->old_file.path, delta->old_file.path,
             relpath, delta->new_file.path, delta->new_file.path);
 
-        /* TODO: "new file mode <mode>". */
-        /* TODO: add indexfrom...indexto + flags */
-
-#if 0
-        fputs("<b>--- ", fp);
-        if (delta->status & GIT_DELTA_ADDED)
-            fputs("/dev/null", fp);
-        else
-            fprintf(fp, "a/<a href=\"%sfile/%s\">%s</a>",
-                relpath, delta->old_file.path, delta->old_file.path);
-
-        fputs("\n+++ ", fp);
-        if (delta->status & GIT_DELTA_DELETED)
-            fputs("/dev/null", fp);
-        else
-            fprintf(fp, "b/<a href=\"%sfile/%s\">%s</a>",
-                relpath, delta->new_file.path, delta->new_file.path);
-        fputs("</b>\n", fp);
-#endif
-
         /* check binary data */
         if (delta->flags & GIT_DIFF_FLAG_BINARY) {
             fputs("Binary files differ\n", fp);
@@ -317,32 +368,20 @@ printshowfile(git_commit *commit)
         }
         git_patch_free(patch);
     }
-    git_diff_free(diff);
+    git_buf_free(&statsbuf);
 
     writefooter(fp);
     fclose(fp);
     return;
-
-err:
-    git_buf_free(&diffstatsbuf);
-    fclose(fp);
 }
 
 int
 writelog(FILE *fp)
 {
+    struct commitinfo *ci;
     git_revwalk *w = NULL;
     git_oid id;
-    git_commit *commit = NULL;
-    const git_signature *author;
-    git_diff_stats *stats = NULL;
-    git_tree *commit_tree = NULL, *parent_tree = NULL;
-    git_commit *parent = NULL;
-    git_diff *diff = NULL;
-    size_t nfiles, ndel, nadd;
-    const char *summary;
-    char buf[GIT_OID_HEXSZ + 1];
-    int error, ret = 0;
+    int ret = 0;
 
     mkdir("commit", 0755);
 
@@ -355,67 +394,37 @@ writelog(FILE *fp)
     while (!git_revwalk_next(&id, w)) {
         relpath = "";
 
-        if (git_commit_lookup(&commit, repo, &id)) {
-            ret = 1;
-            goto err;
-        }
-        if ((error = git_commit_tree(&commit_tree, commit)))
-            goto errdiff; /* TODO: handle error */
-        if (!(error = git_commit_parent(&parent, commit, 0))) {
-            if ((error = git_commit_tree(&parent_tree, parent)))
-                goto errdiff;
-        } else {
-            parent = NULL;
-            parent_tree = NULL;
-        }
-
-        if ((error = git_diff_tree_to_tree(&diff, repo, parent_tree, commit_tree, NULL)))
-            goto errdiff;
-        if (git_diff_get_stats(&stats, diff))
-            goto errdiff;
-
-        git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
-
-        ndel = git_diff_stats_deletions(stats);
-        nadd = git_diff_stats_insertions(stats);
-        nfiles = git_diff_stats_files_changed(stats);
-
-        /* TODO: show tag when commit has it */
-
-        /* TODO: collect stats per author and make stats.html page */
-        author = git_commit_author(commit);
-        summary = git_commit_summary(commit);
+        if (!(ci = commitinfo_getbyoid(&id)))
+            break;
 
         fputs("<tr><td>", fp);
-        if (summary) {
-            fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, buf);
-            xmlencode(fp, summary, strlen(summary));
+        if (ci->summary) {
+            fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
+            xmlencode(fp, ci->summary, strlen(ci->summary));
             fputs("</a>", fp);
         }
         fputs("</td><td>", fp);
-        if (author)
-            xmlencode(fp, author->name, strlen(author->name));
+        if (ci->author)
+            xmlencode(fp, ci->author->name, strlen(ci->author->name));
+
         fputs("</td><td align=\"right\">", fp);
-        printtime(fp, &author->when);
+        if (ci->author)
+            printtime(fp, &(ci->author->when));
         fputs("</td><td align=\"right\">", fp);
-        fprintf(fp, "%zu", nfiles);
+        fprintf(fp, "%zu", ci->filecount);
         fputs("</td><td align=\"right\">", fp);
-        fprintf(fp, "+%zu", nadd);
+        fprintf(fp, "+%zu", ci->addcount);
         fputs("</td><td align=\"right\">", fp);
-        fprintf(fp, "-%zu", ndel);
+        fprintf(fp, "-%zu", ci->delcount);
         fputs("</td></tr>\n", fp);
 
         relpath = "../";
-        printshowfile(commit);
+        printshowfile(ci);
 
-errdiff:
-        /* TODO: print error ? */
-        git_diff_stats_free(stats);
-        git_diff_free(diff);
-        git_commit_free(commit);
+        commitinfo_free(ci);
     }
     fprintf(fp, "</tbody></table>");
-err:
+
     git_revwalk_free(w);
     relpath = "";
 
@@ -423,38 +432,28 @@ err:
 }
 
 void
-printcommitatom(FILE *fp, git_commit *commit)
+printcommitatom(FILE *fp, struct commitinfo *ci)
 {
-    const git_signature *sig;
-    char buf[GIT_OID_HEXSZ + 1];
-    int i, count;
-    const char *msg, *summary;
-
     fputs("<entry>\n", fp);
 
-    /* TODO: show tag when commit has it */
-    git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
-    fprintf(fp, "<id>%s</id>\n", buf);
-
-    sig = git_commit_author(commit);
-
-    if (sig) {
+    fprintf(fp, "<id>%s</id>\n", ci->oid);
+    if (ci->author) {
         fputs("<updated>", fp);
-        printtimez(fp, &sig->when);
+        printtimez(fp, &(ci->author->when));
         fputs("</updated>\n", fp);
     }
-
-    if ((summary = git_commit_summary(commit))) {
+    if (ci->summary) {
         fputs("<title type=\"text\">", fp);
-        xmlencode(fp, summary, strlen(summary));
+        xmlencode(fp, ci->summary, strlen(ci->summary));
         fputs("</title>\n", fp);
     }
 
     fputs("<content type=\"text\">", fp);
-    fprintf(fp, "commit %s\n", buf);
-    if (git_oid_tostr(buf, sizeof(buf), git_commit_parent_id(commit, 0)) && buf[0])
-        fprintf(fp, "parent %s\n", buf);
+    fprintf(fp, "commit %s\n", ci->oid);
+    if (ci->parentoid[0])
+        fprintf(fp, "parent %s\n", ci->parentoid);
 
+#if 0
     if ((count = (int)git_commit_parentcount(commit)) > 1) {
         fprintf(fp, "Merge:");
         for (i = 0; i < count; i++) {
@@ -463,25 +462,26 @@ printcommitatom(FILE *fp, git_commit *commit)
         }
         fputc('\n', fp);
     }
+#endif
 
-    if (sig) {
+    if (ci->author) {
         fprintf(fp, "Author: ");
-        xmlencode(fp, sig->name, strlen(sig->name));
+        xmlencode(fp, ci->author->name, strlen(ci->author->name));
         fprintf(fp, " &lt;");
-        xmlencode(fp, sig->email, strlen(sig->email));
+        xmlencode(fp, ci->author->email, strlen(ci->author->email));
         fprintf(fp, "&gt;\nDate:   ");
-        printtime(fp, &sig->when);
+        printtime(fp, &(ci->author->when));
     }
     fputc('\n', fp);
 
-    if ((msg = git_commit_message(commit)))
-        xmlencode(fp, msg, strlen(msg));
+    if (ci->msg)
+        xmlencode(fp, ci->msg, strlen(ci->msg));
     fputs("\n</content>\n", fp);
-    if (sig) {
+    if (ci->author) {
         fputs("<author><name>", fp);
-        xmlencode(fp, sig->name, strlen(sig->name));
+        xmlencode(fp, ci->author->name, strlen(ci->author->name));
         fputs("</name>\n<email>", fp);
-        xmlencode(fp, sig->email, strlen(sig->email));
+        xmlencode(fp, ci->author->email, strlen(ci->author->email));
         fputs("</email>\n</author>\n", fp);
     }
     fputs("</entry>\n", fp);
@@ -490,9 +490,9 @@ printcommitatom(FILE *fp, git_commit *commit)
 int
 writeatom(FILE *fp)
 {
+    struct commitinfo *ci;
     git_revwalk *w = NULL;
     git_oid id;
-    git_commit *c = NULL;
     size_t i, m = 100; /* max */
 
     fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n", fp);
@@ -507,10 +507,10 @@ writeatom(FILE *fp)
     git_revwalk_push_head(w);
 
     for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
-        if (git_commit_lookup(&c, repo, &id))
-            return 1; /* TODO: error */
-        printcommitatom(fp, c);
-        git_commit_free(c);
+        if (!(ci = commitinfo_getbyoid(&id)))
+            break;
+        printcommitatom(fp, ci);
+        commitinfo_free(ci);
     }
     git_revwalk_free(w);
 
@@ -522,14 +522,16 @@ writeatom(FILE *fp)
 int
 writefiles(FILE *fp)
 {
-    git_index *index;
     const git_index_entry *entry;
+    git_index *index;
     size_t count, i;
 
-    git_repository_index(&index, repo);
+    fputs("<table><thead>\n"
+          "<tr><td>Mode</td><td>Name</td><td align=\"right\">Size</td></tr>\n"
+          "</thead><tbody>\n", fp);
 
+    git_repository_index(&index, repo);
     count = git_index_entrycount(index);
-    fputs("<table><thead>\n<tr><td>Mode</td><td>Name</td><td align=\"right\">Size</td></tr>\n</thead><tbody>\n", fp);
 
     for (i = 0; i < count; i++) {
         entry = git_index_get_byindex(index, i);
@@ -543,17 +545,12 @@ writefiles(FILE *fp)
         fprintf(fp, "%" PRIu64, entry->file_size);
         fputs("</td></tr>\n", fp);
     }
+
     fputs("</tbody></table>", fp);
 
     return 0;
 }
 
-void
-writeblobhtml(FILE *fp, const git_blob *blob)
-{
-    xmlencode(fp, git_blob_rawcontent(blob), (size_t)git_blob_rawsize(blob));
-}
-
 int
 main(int argc, char *argv[])
 {