Cleanup repo, reinit in sh

1 files changed, 606 insertions, 94 deletions

diff --git a/src/gistatic.in b/src/gistatic.in
index 3f005ee..21980a5 100755
--- a/src/gistatic.in
+++ b/src/gistatic.in
@@ -1,25 +1,27 @@
 #!/bin/sh
 # shellcheck disable=2034 disable=2059
+# FIXME: remove these ^^^
 set -eu
 
 MSG_USAGE_EN='Usage:
-  @NAME@ -i -o DIRECTORY REPOSITORY...
-  @NAME@    -o DIRECTORY -u CLONE_URL REPOSITORY
-  @NAME@ [-hV]
-'
-
-MSG_HELP_EN='Options:
-  -i             build the index page of the repositories
-  -u CLONE_URL   address to be shown alongside "git clone"
-  -o DIRECTORY   output where to place the generated files
-  -h, --help     show this help
-  -V, --version  print the version information
-
-See "man @NAME@" for more information.'
-
-MSG_MISSING_CLIARG_EN='Missing %s\n'
-MSG_INCOMPATIBLE_OPTIONS_EN='Incompatible options -u and -i'
-MSG_MISSING_ARGS_EN='Missing [PATH | [PATHS]]'
+  gistatic -i -o DIRECTORY REPOSITORY...
+  gistatic    -o DIRECTORY -u CLONE_URL [-b MAIN_BRANCH] REPOSITORY
+  gistatic [-hV]'
+
+MSG_HELP_EN='
+Options:
+  -i              build the index page of the repositories
+  -u CLONE_URL    address to be shown alongside "git clone"
+  -o DIRECTORY    output where to place the generated files
+  -b MAIN_BRANCH  the default branch of the repository (default: main)
+  -h, --help      show this help
+  -V, --version   print the version information
+
+See "man gistatic" for more information.'
+
+MSG_MISSING_CLIARG_EN='Missing %s'
+MSG_INCOMPATIBLE_OPTIONS_EN='Incompatible options: '
+MSG_MISSING_ARGS_EN='[PATH | [PATHS]]'
 MSG_LANGNAME_EN='en'
 MSG_INDEX_DESCRIPTION_EN='Index of repositories'
 MSG_DEFAULT_TITLE_EN='Repositories'
@@ -28,7 +30,6 @@ MSG_LOGO_ALT_REPOSITORY_EN='Logo image of the repository'
 MSG_NAME_EN='Name'
 MSG_DESCRIPTION_EN='Description'
 MSG_LAST_COMMIT_EN='Last commit'
-MSG_FOOTER_TEMPLATE_EN='Generated with <a href="https://euandreh.xyz/@NAME@/">@NAME@</a>.'
 MSG_COMMIT_FEED_EN='commit feed'
 MSG_TAGS_FEED_EN='tags feed'
 MSG_NAV_FILES_EN='files'
@@ -40,6 +41,10 @@ MSG_THEAD_AUTHOR_EN='Author'
 MSG_THEAD_DATE_EN='Date'
 MSG_THEAD_TAG_EN='Tag'
 MSG_TITLE_REFS_EN='refs'
+MSG_GENERATING_LOG_EN='Generating %s...'
+
+# HTML escaped messages
+MSG_ESCAPED_FOOTER_TEMPLATE_EN='Generated with <a href="https://euandreh.xyz/gistatic/">gistatic</a>.'
 
 set_lang() {
 	lang="$1"
@@ -57,7 +62,6 @@ set_lang() {
 	MSG_NAME=\$MSG_NAME_$lang
 	MSG_DESCRIPTION=\$MSG_DESCRIPTION_$lang
 	MSG_LAST_COMMIT=\$MSG_LAST_COMMIT_$lang
-	MSG_FOOTER_TEMPLATE=\$MSG_FOOTER_TEMPLATE_$lang
 	MSG_COMMIT_FEED=\$MSG_COMMIT_FEED_$lang
 	MSG_TAGS_FEED=\$MSG_TAGS_FEED_$lang
 	MSG_NAV_FILES=\$MSG_NAV_FILES_$lang
@@ -69,6 +73,9 @@ set_lang() {
 	MSG_THEAD_DATE=\$MSG_THEAD_DATE_$lang
 	MSG_THEAD_TAG=\$MSG_THEAD_TAG_$lang
 	MSG_TITLE_REFS=\$MSG_TITLE_REFS_$lang
+	MSG_GENERATING_LOG=\$MSG_GENERATING_LOG_$lang
+
+	MSG_ESCAPED_FOOTER_TEMPLATE=\$MSG_ESCAPED_FOOTER_TEMPLATE_$lang
 "
 }
 
@@ -76,7 +83,7 @@ get_lang() {
 	# LC_MESSAGES="ll_CC.CODESET@modifier" -> ll_CC, where quotes
 	# are optional
 	locale 2>/dev/null |
-		grep LC_MESSAGES |
+		grep ^LC_MESSAGES |
 		cut -d.  -f1     |
 		cut -d\" -f2     |
 		cut -d=  -f2
@@ -93,6 +100,10 @@ esac
 # Utilities
 #
 
+tac() {
+	sed '1!G;h;$!d'
+}
+
 escape() {
 	echo "$1" |
 		sed -e 's|&|\&amp;|g;s|<|\&lt;|g;s|>|\&gt;|g;s|"|\&quot;|g' \
@@ -119,7 +130,7 @@ help() {
 }
 
 version() {
-	printf '@NAME@-@VERSION@ @DATE@\n'
+	printf 'gistatic-0.1.0 1970-01-01\n'
 }
 
 
@@ -199,16 +210,22 @@ print_style() {
 :root {
   --color: black;
   --background-color: white;
+  --background-contrast-color: hsl(0, 0%, 98%);
   --hover-color: hsl(0, 0%, 93%);
   --nav-color: hsl(0, 0%, 87%);
+  --selected-color: hsl(0, 0%, 80%);
+  --diff-added-color: hsl(120, 100%, 23%);
+  --diff-removed-color: hsl(0, 100%, 47%);
 }
 
 @media(prefers-color-scheme: dark) {
   :root {
     --color: white;
     --background-color: black;
+    --background-contrast-color: hsl(0, 0%, 2%);
     --hover-color: hsl(0, 0%, 7%);
     --nav-color: hsl(0, 0%, 13%);
+    --selected-color: hsl(0, 0%, 20%);
   }
 
   body {
@@ -293,6 +310,69 @@ td {
   padding-right: 1em;
 }
 
+
+/* commit page */
+
+.diff-added, .diff-removed {
+  text-decoration: none;
+}
+
+.diff-added:target, .diff-removed:target {
+  background-color: var(--selected-color);
+}
+
+.diff-added, .diff-added:visited {
+  color: var(--diff-added-color);
+}
+
+.diff-removed, .diff-removed:visited {
+  color: var(--diff-removed-color);
+}
+
+
+/* log page */
+
+.log-commit-box {
+  padding: 1em;
+  margin: 1em;
+  background-color: var(--background-contrast-color);
+}
+
+.log-commit-tag {
+  padding: 2px;
+  border: 1px solid;
+  color: var(--color);
+}
+
+.log-head-highlight {
+  background-color: #ff8888; /* FIXME: hsl + dark-mode */
+}
+
+.log-branch-highlight {
+  background-color: #88ff88; /* FIXME: hsl + dark-mode */
+}
+
+.log-tag-highlight {
+  background-color: #ffff88; /* FIXME: hsl + dark-mode */
+}
+
+.pre-wrapping {
+  overflow: auto;
+  margin: 1em;
+}
+
+.log-notes {
+  /* FIXME: yellow box goes until the end of the screen */
+  padding: 1em;
+  background-color: #ffd; /* FIXME: hsl + dark-mode */
+}
+
+.log-pagination {
+  text-align: center;
+  margin: 2em;
+}
+
+
 footer {
   text-align: center;
 }
@@ -369,7 +449,7 @@ print_index_footer() {
     <footer>
       <hr />
       <p>
-	$(escape "$MSG_FOOTER_TEMPLATE")
+	$MSG_ESCAPED_FOOTER_TEMPLATE
       </p>
     </footer>
   </body>
@@ -389,6 +469,72 @@ index_write() {
 	print_style > "$OUTDIR/style.css"
 }
 
+genlog() {
+	if [ "$VERBOSE" = true ]; then
+		printf "$MSG_GENERATING_LOG\n" "$1" >&2
+	fi
+}
+
+parallel_n=0
+cached_run() {
+	TARGET_PATH="$1"
+	shift # drop $TARGET_PATH
+	shift # drop --
+
+	if [ -e "$OUTDIR/$TARGET_PATH" ]; then
+		return
+	fi
+
+	if [ -e "$CACHE_DIR/$TARGET_PATH" ]; then
+		cp "$CACHE_DIR/$TARGET_PATH" "$OUTDIR/$TARGET_PATH"
+	else
+		{
+			genlog "$OUTDIR/$TARGET_PATH"
+			"$@"
+			cp "$CACHE_DIR/$TARGET_PATH" "$OUTDIR/$TARGET_PATH"
+		} &
+		parallel_n=$((parallel_n + 1))
+		if [ "$parallel_n" = "$MAX_JOBS" ]; then
+			wait
+			parallel_n=0
+		fi
+	fi
+}
+
+repo_tarballs_write() {
+	repo="$1"
+	mkdir -p "$OUTDIR/tarballs" "$CACHE_DIR/tarballs"
+	local_parallel_n=0
+	for branch in $(git branch --format '%(refname:lstrip=2)'); do
+		TARBALL_PATH="$OUTDIR/tarballs/$repo-$branch.tar.gz"
+		genlog "$TARBALL_PATH"
+		git archive  --prefix "$repo-$branch/" "$branch" \
+			-o "$TARBALL_PATH" &
+		local_parallel_n=$((local_parallel_n + 1))
+		if [ "$local_parallel_n" = "$MAX_JOBS" ]; then
+			wait
+			local_parallel_n=0
+		fi
+	done
+	wait
+
+	for tag in $(git tag); do
+		TARBALL_PATH="tarballs/$repo-$tag.tar.gz"
+		cached_run "$TARBALL_PATH" -- \
+			git archive  --prefix "$repo-$tag/" "$tag" \
+				-o "$CACHE_DIR/$TARBALL_PATH"
+
+		SIGNATURE_PATH="tarballs/$repo-$tag.tar.gz.asc"
+		if git notes --ref=refs/notes/signatures/tar.gz show "$tag" \
+				1>/dev/null 2>&1; then
+			git notes --ref=refs/notes/signatures/tar.gz \
+				show "$tag" > "$OUTDIR/$SIGNATURE_PATH"
+		fi
+	done
+
+	wait
+}
+
 print_repo_refs() {
 	repo="$1"
 	description="$2"
@@ -409,7 +555,7 @@ print_repo_refs() {
     <header>
       <div class="header-horizontal-grouping">
 	<a href="../">
-	  <img alt="$(escape "$MSG_LOGO_ALT_REPOSITORY")" class="logo" src="logo.svg" />
+	  <img alt="$(escape "$MSG_LOGO_ALT_INDEX")" class="logo" src="logo.svg" />
 	</a>
 	<div class="header-description">
 	  <h1>
@@ -428,12 +574,12 @@ print_repo_refs() {
       <nav>
 	<ul>
 	  <li>
-	    <a href="files.html">
+	    <a href="./">
 	      $(escape "$MSG_NAV_FILES")
 	    </a>
 	  </li>
 	  <li>
-	    <a href="log.html">
+	    <a href="log/$(escape "$MAIN_BRANCH").html">
 	      $(escape "$MSG_NAV_LOG")
 	    </a>
 	  </li>
@@ -478,7 +624,7 @@ EOF
 	    </td>
 	    <td>
 	      <a href="commit/$(escape "$sha").html">
-		$(escape "$(git log -1 --format=%B "$sha")")
+		$(escape "$(git log -1 --format=%s "$sha")")
 	      </a>
 	    </td>
 	    <td>
@@ -494,6 +640,13 @@ EOF
 	cat <<EOF
         </tbody>
       </table>
+EOF
+	PRINTED_TABLE_OPEN=false
+
+	for tag in $(git tag | tac); do
+		if [ "$PRINTED_TABLE_OPEN" = false ]; then
+			PRINTED_TABLE_OPEN=true
+			cat <<EOF
       <table>
 	<thead>
 	  <tr>
@@ -510,14 +663,15 @@ EOF
 	</thead>
 	<tbody>
 EOF
+		fi
 
-	for tag in $(git tag | sed '1!G;h;$!d'); do
 		if [ -e "$CACHE_DIR/tarballs/$repo-$tag.tar.gz.asc" ]; then
 			tarball_link="(<a href=\"tarballs/$(escape "$repo")-$(escape "$tag").tar.gz\">tarball</a>,
 	       <a href=\"tarballs/$(escape "$repo")-$(escape "$tag").tar.gz.asc\">sig</a>)"
 		else
 			tarball_link="(<a href=\"tarballs/$(escape "$repo")-$(escape "$tag").tar.gz\">tarball</a>)"
 		fi
+
 		cat <<EOF
           <tr>
 	    <td>
@@ -536,14 +690,19 @@ EOF
 EOF
 	done
 
-	cat <<EOF
+	if [ "$PRINTED_TABLE_OPEN" = true ]; then
+		cat <<EOF
         </tbody>
       </table>
+EOF
+	fi
+
+	cat <<EOF
     </main>
     <footer>
       <hr />
       <p>
-	$(escape "$MSG_FOOTER_TEMPLATE")
+	$MSG_ESCAPED_FOOTER_TEMPLATE
       </p>
     </footer>
   </body>
@@ -553,13 +712,64 @@ EOF
 
 print_formatted_diff() {
 	sha="$1"
-	printf '<pre>'
-	git show -p "$sha"
+	previous_sha="$2"
+	printf '<pre class="pre-wrapping">'
+	# git show -p --stat "$sha"
+	escape "$(git show -p "$sha")" | awk \
+			-v SHA="$sha" -v PREVIOUS_SHA="$previous_sha" '
+		BEGIN {
+			diff_init = 0
+			diffl = 0
+		}
+
+		/^(diff|index) / {
+			diff_init = 1
+			print $0
+			next
+		}
+
+		diff_init == 1 && /^--- a\// {
+			fname = substr($0, 7)
+			printf "--- a/<a href=\"../tree/%s/%s.html\">%s</a>\n",
+				PREVIOUS_SHA, fname, fname
+			next
+		}
+
+		diff_init == 1 && /^\+\+\+ b\// {
+			fname = substr($0, 7)
+			printf "--- b/<a href=\"../tree/%s/%s.html\">%s</a>\n",
+				SHA, fname, fname
+			next
+		}
+
+		{ diff_init = 0 }
+
+		/^-/ {
+			diffl++
+			printf "<a id=\"l%s\" href=\"#l%s\" class=\"diff-removed\">%s</a>\n",
+				diffl, diffl, $0
+			next
+		}
+
+		/^\+/ {
+			diffl++
+			printf "<a id=\"l%s\" href=\"#l%s\" class=\"diff-added\">%s</a>\n",
+			diffl, diffl, $0
+			next
+		}
+
+		{
+			print $0
+		}
+	'
 	printf '</pre>\n'
 }
 
 print_repo_commit_page() {
-	sha="$2"
+	repo="$1"
+	description="$2"
+	sha="$3"
+	previous_sha="$(git rev-parse "$sha^" 2>/dev/null ||:)"
 	summary="$(git log -1 --format=%B "$sha")"
 	cat <<EOF
 <!DOCTYPE html>
@@ -597,17 +807,17 @@ print_repo_commit_page() {
       <nav>
 	<ul>
 	  <li>
-	    <a href="files.html">
+	    <a href="../">
 	      $(escape "$MSG_NAV_FILES")
 	    </a>
 	  </li>
 	  <li>
-	    <a href="log.html">
+	    <a href="../log/$(escape "$MAIN_BRANCH").html">
 	      $(escape "$MSG_NAV_LOG")
 	    </a>
 	  </li>
 	  <li>
-	    <a href="refs.html">
+	    <a href="../refs.html">
 	      $(escape "$MSG_NAV_REFS")
 	    </a>
 	  </li>
@@ -616,12 +826,12 @@ print_repo_commit_page() {
       <hr />
     </header>
     <main>
-$(print_formatted_diff "$sha")
+$(print_formatted_diff "$sha" "$previous_sha")
     </main>
     <footer>
       <hr />
       <p>
-	$(escape "$MSG_FOOTER_TEMPLATE")
+	$MSG_ESCAPED_FOOTER_TEMPLATE
       </p>
     </footer>
   </body>
@@ -629,76 +839,352 @@ $(print_formatted_diff "$sha")
 EOF
 }
 
+repo_commits_write() {
+	repo="$1"
+	description="$2"
+	mkdir -p "$OUTDIR/commit" "$CACHE_DIR/commit"
+	for branch in $(git branch --format '%(refname:lstrip=2)'); do
+		for commit in $(git rev-list "$branch"); do
+			COMMIT_PATH="commit/$commit.html"
 
-cached_run() {
-	TARGET_PATH="$1"
-	shift # drop $TARGET_PATH
-	shift # drop --
+			if [ -e "$OUTDIR/$COMMIT_PATH" ]; then
+				# Assume all previous history exists, too
+				break
+			fi
 
-	if [ -e "$OUTDIR/$TARGET_PATH" ]; then
-		echo "$OUTDIR/$TARGET_PATH"
-		return
-	fi
-	if [ ! -e "$CACHE_DIR/$TARGET_PATH" ]; then
-		"$@"
-	fi
-	cp "$CACHE_DIR/$TARGET_PATH" "$OUTDIR/$TARGET_PATH"
+			cached_run "$COMMIT_PATH" -- \
+				eval "print_repo_commit_page '$repo' '$description' '$commit' \
+					> '$CACHE_DIR/$COMMIT_PATH'"
+		done
+	done
+
+	wait
 }
 
-repo_tarballs_write() {
+NEWLINE="$(printf '\n')"
+print_repo_log_page() {
 	repo="$1"
-	mkdir -p "$OUTDIR/tarballs" "$CACHE_DIR/tarballs"
-	for branch in $(git branch --format '%(refname:lstrip=2)'); do
-		git archive  --prefix "$repo-$branch/" "$branch" \
-			-o "$OUTDIR/tarballs/$repo-$branch.tar.xz"
-	done
+	description="$2"
+	newer_page_name="$3"
+	older_page_name="$4"
+	shift
+	shift
+	shift
+	shift
+
+	title='FIXME'
+
+	if [ -z "$newer_page_name" ]; then
+		escaped_newer_page_link=''
+	else
+		escaped_newer_page_link="        <a href=\"$(escape "$newer_page_name")\">newer FIXME i18n</a>"'
+'
+	fi
 
-	for tag in $(git tag); do
-		TARBALL_PATH="tarballs/$repo-$tag.tar.gz"
-		cached_run "$TARBALL_PATH" -- \
-			git archive  --prefix "$repo-$tag/" "$tag" \
-				-o "$CACHE_DIR/$TARBALL_PATH"
+	if [ -z "$older_page_name" ]; then
+		escaped_older_page_link=''
+	else
+		escaped_older_page_link="        <a href=\"$(escape "$older_page_name")\">older FIXME i18n</a>"'
+'
+	fi
 
-		SIGNATURE_PATH="tarballs/$repo-$tag.tar.gz.asc"
-		if git notes --ref=refs/notes/signatures/tar.gz show "$tag" \
-				1>/dev/null 2>&1; then
-			git notes --ref=refs/notes/signatures/tar.gz show "$tag" \
-				> "$OUTDIR/$SIGNATURE_PATH"
+	if [ -n "$newer_page_name" ] || [ -n "$older_page_name" ]; then
+		escaped_pagination_open='      <section class="log-pagination">
+'
+		escaped_pagination_close='      </section>
+'
+	else
+		escaped_pagination_open=''
+		escaped_pagination_close=''
+	fi
+
+	if [ -n "$newer_page_name" ] && [ -n "$older_page_name" ]; then
+		escaped_pagination_separator='        |
+'
+	else
+		escaped_pagination_separator=''
+	fi
+
+	cat <<EOF
+<!DOCTYPE html>
+<html lang="$(escape "$MSG_LANGNAME")">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport"    content="width=device-width, initial-scale=1" />
+    <meta name="description" content="$(escape "$description")" />
+    <link rel="icon"       type="image/svg+xml"        href="../logo.svg" />
+    <link rel="stylesheet" type="text/css"             href="../style.css" />
+    <link rel="alternate"  type="application/atom+xml" href="../commits.xml" title="$(escape "$repo") - $(escape "$MSG_COMMIT_FEED")" hreflang="$(escape "$MSG_LANGNAME")" />
+    <link rel="alternate"  type="application/atom+xml" href="../tags.xml"    title="$(escape "$repo") - $(escape "$MSG_TAGS_FEED")"   hreflang="$(escape "$MSG_LANGNAME")" />
+    <title>$(escape "$repo") - $(escape "$title")</title>
+  </head>
+  <body>
+    <header>
+      <div class="header-horizontal-grouping">
+	<a href="../../">
+	  <img alt="$(escape "$MSG_LOGO_ALT_INDEX")" class="logo" src="../logo.svg" />
+	</a>
+	<div class="header-description">
+	  <h1>
+	    <a href="../">
+	      $(escape "$repo")
+	    </a>
+	  </h1>
+	  <h2>
+	    $(escape "$description")
+	  </h2>
+	  <code>
+	    git clone $(escape "$CLONE_URL")
+	  </code>
+	</div>
+      </div>
+      <nav>
+	<ul>
+	  <li>
+	    <a href="../">
+	      $(escape "$MSG_NAV_FILES")
+	    </a>
+	  </li>
+	  <li class="selected-nav-item">
+	    <a href="../log/$(escape "$MAIN_BRANCH").html">
+	      $(escape "$MSG_NAV_LOG")
+	    </a>
+	  </li>
+	  <li>
+	    <a href="../refs.html">
+	      $(escape "$MSG_NAV_REFS")
+	    </a>
+	  </li>
+	</ul>
+      </nav>
+      <hr />
+    </header>
+    <main>
+EOF
+
+	for commit in "$@"; do
+		body_txt="$(git log -1 --format=%b "$commit")"
+		if [ "$body_txt" = "$NEWLINE" ]; then
+			body=''
+		else
+			body="
+
+$body_txt"
 		fi
+
+		notes_txt="$(git log -1 --format=%N "$commit")"
+
+		if [ "$notes_txt" = "$NEWLINE" ]; then
+			escaped_notes=''
+		else
+			escaped_notes="
+        <pre class=\"pre-wrapping log-notes\">$(escape "$notes_txt")</pre>"
+		fi
+
+          # FIXME: show if commit is in branch, tag or HEAD
+	  # <a href="#" class="log-commit-tag log-head-highlight">HEAD</a>
+	  # <a href="#" class="log-commit-tag log-branch-highlight">main</a>
+	  # <a href="#" class="log-commit-tag log-tag-highlight">v0.2.1</a>
+
+		cat <<EOF
+      <section class="log-commit-box">
+        <p>
+          <a href="../commit/$(escape "$commit").html">$(escape "$commit")</a>
+          |
+          $(escape "$(git log -1 --format=%an "$commit")")
+        </p>
+        <pre class="pre-wrapping"><strong>$(escape "$(git log -1 --format=%s "$commit")")</strong>$(escape "$body")</pre>$escaped_notes
+      </section>
+EOF
 	done
+
+	cat <<EOF
+$escaped_pagination_open$escaped_newer_page_link$escaped_pagination_separator$escaped_older_page_link$escaped_pagination_close    </main>
+    <footer>
+      <hr />
+      <p>
+        $MSG_ESCAPED_FOOTER_TEMPLATE
+      </p>
+    </footer>
+  </body>
+</html>
+EOF
 }
 
-repo_commits_write() {
-	mkdir -p "$OUTDIR/commit" "$CACHE_DIR/commit"
-	for branch in $(git branch --format '%(refname:lstrip=2)'); do
-		for commit in $(git rev-list "$branch"); do
-			COMMIT_PATH="commit/$commit.html"
-			if [ -e "$OUTDIR/$COMMIT_PATH" ]; then
-				# Assume all previous history exists, too
-				break
+# FIXME: use log/main/1.html over diffs?
+LOG_PAGE_MAX=50
+repo_log_write() {
+	repo="$1"
+	description="$2"
+	mkdir -p "$OUTDIR/log" "$CACHE_DIR/log"
+	for ref in $(git branch --format '%(refname:lstrip=2)') $(git tag); do
+		# FIXME: add bail out of loop when the first page already
+		# exists, so nothing after that needs to be ran
+
+		mkdir -p "$CACHE_DIR/log_tmp/$ref"
+		PAGE_SIZE=0
+		PAGE_INDEX=0
+		for commit in $(git rev-list "$ref" | tac); do
+			if [ "$PAGE_SIZE" = 0 ]; then
+				FIRST="$commit"
 			fi
-			if [ ! -e "CACHE_DIR/$COMMIT_PATH" ]; then
-				print_repo_commit_page "$repo" "$commit" \
-					> "$CACHE_DIR/$COMMIT_PATH"
+			LAST="$commit"
+			PAGE_NAME="$FIRST..$LAST.html"
+			PAGE_SIZE=$((PAGE_SIZE + 1))
+
+			if [ "$PAGE_SIZE" != "$LOG_PAGE_MAX" ]; then
+				continue
 			fi
-			cp "$CACHE_DIR/$COMMIT_PATH" "$OUTDIR/$COMMIT_PATH"
 
-			# FIXME: WIP
-			return
+			echo "$PAGE_NAME" > "$CACHE_DIR/log_tmp/$ref/$PAGE_INDEX"
+
+			PAGE_INDEX=$((PAGE_INDEX + 1))
+			PAGE_SIZE=0
 		done
+		if [ "$PAGE_SIZE" != 0 ]; then
+			echo "$PAGE_NAME" > "$CACHE_DIR/log_tmp/$ref/$PAGE_INDEX"
+		fi
+
+		PAGE_COMMITS=''
+		PAGE_SIZE=0
+		PAGE_INDEX=0
+		for commit in $(git rev-list "$ref" | tac); do
+			PAGE_COMMITS="$commit $PAGE_COMMITS"
+			PAGE_SIZE=$((PAGE_SIZE + 1))
+
+			if [ "$PAGE_SIZE" != "$LOG_PAGE_MAX" ]; then
+				continue
+			fi
+
+			# FIXME: 80 columns
+			NEWER_PAGE_NAME="$(cat "$CACHE_DIR/log_tmp/$ref/$((PAGE_INDEX + 1))" 2>/dev/null ||:)"
+			CURRT_PAGE_NAME="$(cat "$CACHE_DIR/log_tmp/$ref/$((PAGE_INDEX + 0))" 2>/dev/null ||:)"
+			OLDER_PAGE_NAME="$(cat "$CACHE_DIR/log_tmp/$ref/$((PAGE_INDEX - 1))" 2>/dev/null ||:)"
+			PAGE_PATH="log/$CURRT_PAGE_NAME"
+
+			cached_run "$PAGE_PATH" -- eval "print_repo_log_page \
+				'$repo' '$description' \
+				'$NEWER_PAGE_NAME' '$OLDER_PAGE_NAME' \
+				$PAGE_COMMITS \
+				> '$CACHE_DIR/$PAGE_PATH'"
+			PAGE_COMMITS=''
+			PAGE_SIZE=0
+			PAGE_INDEX=$((PAGE_INDEX + 1))
+		done
+		if [ "$PAGE_SIZE" != 0 ]; then
+			# FIXME: 80 columns
+			NEWER_PAGE_NAME="$(cat "$CACHE_DIR/log_tmp/$ref/$((PAGE_INDEX + 1))" 2>/dev/null ||:)"
+			CURRT_PAGE_NAME="$(cat "$CACHE_DIR/log_tmp/$ref/$((PAGE_INDEX + 0))" 2>/dev/null ||:)"
+			OLDER_PAGE_NAME="$(cat "$CACHE_DIR/log_tmp/$ref/$((PAGE_INDEX - 1))" 2>/dev/null ||:)"
+			PAGE_PATH="log/$CURRT_PAGE_NAME"
+
+			cached_run "$PAGE_PATH" -- eval "print_repo_log_page \
+				'$repo' '$description' \
+				'$NEWER_PAGE_NAME' '$OLDER_PAGE_NAME' \
+				$PAGE_COMMITS \
+				> '$CACHE_DIR/$PAGE_PATH'"
+		fi
+		ln -fs "$CURRT_PAGE_NAME" "$OUTDIR/log/$ref.html"
 	done
+	rm -rf "$CACHE_DIR/log_tmp"
+
+	wait
+}
+
+print_repo_index_page() {
+	repo="$1"
+	description="$2"
+
+	cat <<EOF
+<!DOCTYPE html>
+<html lang="$(escape "$MSG_LANGNAME")">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport"    content="width=device-width, initial-scale=1" />
+    <meta name="description" content="$(escape "$description")" />
+    <link rel="icon"       type="image/svg+xml"        href="log.svg" />
+    <link rel="stylesheet" type="text/css"             href="style.css" />
+    <link rel="alternate"  type="application/atom+xml" href="commits.xml" title="$(escape "$repo") - $(escape "$MSG_COMMIT_FEED")" hreflang="$(escape "$MSG_LANGNAME")" />
+    <link rel="alternate"  type="application/atom+xml" href="tags.xml"    title="$(escape "$repo") - $(escape "$MSG_TAGS_FEED")"   hreflang="$(escape "$MSG_LANGNAME")" />
+    <title>$(escape "$repo") - FIXME</title>
+  </head>
+  <body>
+    <header>
+      <div class="header-horizontal-grouping">
+	<a href="../">
+	  <img alt="$(escape "$MSG_LOGO_ALT_INDEX")" class="logo" src="logo.svg" />
+	</a>
+	<div class="header-description">
+	  <h1>
+	    <a href="./">
+	      $(escape "$repo")
+	    </a>
+	  </h1>
+	  <h2>
+	    $(escape "$description")
+	  </h2>
+	  <code>
+	    git clone <a href="$(escape "$CLONE_URL")">$(escape "$CLONE_URL")</a>
+	  </code>
+	</div>
+      </div>
+      <nav>
+	<ul>
+	  <li class="selected-nav-item">
+	    <a href="./">
+	      $(escape "$MSG_NAV_FILES")
+	    </a>
+	  </li>
+	  <li>
+	    <a href="log/$(escape "$MAIN_BRANCH").html">
+	      $(escape "$MSG_NAV_LOG")
+	    </a>
+	  </li>
+	  <li>
+	    <a href="refs.html">
+	      $(escape "$MSG_NAV_REFS")
+	    </a>
+	  </li>
+	</ul>
+      </nav>
+      <hr />
+    </header>
+    <main>
+      <section>
+        Os arquivos vão aqui.
+      </section>
+      <section>
+	O README vai aqui.
+      </section>
+    </main>
+    <footer>
+      <hr />
+      <p>
+	$MSG_ESCAPED_FOOTER_TEMPLATE
+      </p>
+    </footer>
+  </body>
+</html>
+EOF
+}
+
+repo_trees_write() {
+	echo
 }
 
 repo_write() {
 	cd "$1"
+	# FIXME: use $REPO and $DESCRIPTION
 	repo="$(basename "$(realpath "${1%.git}")")"
 	description="$(cat "$1/description" 2>/dev/null ||:)"
 	CACHE_DIR="${XDG_CACHE_HOME:-$HOME/.cache}/gistatic/$repo"
 
 	repo_tarballs_write "$repo"
 	print_repo_refs "$repo" "$description" > "$OUTDIR/refs.html"
-
-	repo_commits_write "$repo"
+	repo_commits_write "$repo" "$description"
+	repo_log_write "$repo" "$description"
+	print_repo_index_page "$repo" "$description" > "$OUTDIR/index.html"
+	repo_trees_write "$repo" "$description"
 
 	print_logo > "$OUTDIR/logo.svg"
 	print_style > "$OUTDIR/style.css"
@@ -725,25 +1211,41 @@ for flag in "$@"; do
 	esac
 done
 
+VERBOSE=true
 INDEX=false
 TITLE="$MSG_DEFAULT_TITLE"
 OUTDIR=
 CLONE_URL=
 CACHE_DIR=
-while getopts 'o:t:u:ihV' flag; do
+MAX_JOBS=1
+MAIN_BRANCH='main'
+MAIN_BRANCH_SET=false
+REPO=
+DESCRIPTION=
+while getopts 'b:o:t:u:j:iqhV' flag; do
 	case "$flag" in
-		i)
-			INDEX=true
-			;;
-		t)
-			TITLE="$OPTARG"
+		b)
+			MAIN_BRANCH="$OPTARG"
+			MAIN_BRANCH_SET=true
 			;;
 		o)
 			OUTDIR="$(realpath "$OPTARG")"
 			;;
+		t)
+			TITLE="$OPTARG"
+			;;
 		u)
 			CLONE_URL="$OPTARG"
 			;;
+		j)
+			MAX_JOBS="$OPTARG"
+			;;
+		i)
+			INDEX=true
+			;;
+		q)
+			VERBOSE=false
+			;;
 		h)
 			usage
 			help
@@ -763,7 +1265,8 @@ shift $((OPTIND - 1))
 
 assert_arg() {
 	if [ -z "$1" ]; then
-		printf "$MSG_MISSING_CLIARG" "$2" >&2
+		printf "$MSG_MISSING_CLIARG\n\n" "$2" >&2
+		usage >&2
 		exit 2
 	fi
 }
@@ -772,16 +1275,25 @@ assert_arg "$OUTDIR" '-o DIRECTORY'
 
 if [ "$INDEX" = false ]; then
 	assert_arg "$CLONE_URL" '-u CLONE_URL'
-elif [ -n "$CLONE_URL" ]; then
-	printf '%s\n' "$MSG_INCOMPATIBLE_OPTIONS" >&2
-	exit 2
-fi
+elif [ -n "$CLONE_URL" ] || [ "$MAIN_BRANCH_SET" = true ]; then
+	{
+		printf '%s' "$MSG_INCOMPATIBLE_OPTIONS"
+		printf -- '-i'
+		if [ -n "$CLONE_URL" ]; then
+			printf -- ' -u'
+		fi
+		if [ "$MAIN_BRANCH_SET" = true ]; then
+			printf -- ' -b'
+		fi
+		printf '\n\n'
 
-if [ -z "${1:-}" ]; then
-	printf '%s\n' "$MSG_MISSING_ARGS" >&2
+		usage
+	} >&2
 	exit 2
 fi
 
+assert_arg "${1:-}" "$MSG_MISSING_ARGS"
+
 mkdir -p "$OUTDIR"
 
 if [ "$INDEX" = true ]; then