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-rw-r--r--t/t4256/1/patch129
1 files changed, 129 insertions, 0 deletions
diff --git a/t/t4256/1/patch b/t/t4256/1/patch
new file mode 100644
index 0000000000..bd0d8b0251
--- /dev/null
+++ b/t/t4256/1/patch
@@ -0,0 +1,129 @@
+From: A <author@example.com>
+Subject: [PATCH] mailinfo: support format=flowed
+Message-ID: <aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa@example.com>
+Date: Sat, 25 Aug 2018 22:04:50 +0200
+User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101
+ Thunderbird/60.0
+MIME-Version: 1.0
+Content-Type: text/plain; charset=utf-8; format=flowed
+Content-Language: en-US
+Content-Transfer-Encoding: 7bit
+
+---
+ mailinfo.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
+ 1 file changed, 62 insertions(+), 2 deletions(-)
+
+diff --git a/mailinfo.c b/mailinfo.c
+index 3281a37d51..b395adbdf2 100644
+--- a/mailinfo.c
++++ b/mailinfo.c
+@@ -237,11 +237,22 @@ static int slurp_attr(const char *line, const char
+*name, struct strbuf *attr)
+ return 1;
+ }
+
++static int has_attr_value(const char *line, const char *name, const
+char *value)
++{
++ struct strbuf sb = STRBUF_INIT;
++ int rc = slurp_attr(line, name, &sb) && !strcasecmp(sb.buf, value);
++ strbuf_release(&sb);
++ return rc;
++}
++
+ static void handle_content_type(struct mailinfo *mi, struct strbuf *line)
+ {
+ struct strbuf *boundary = xmalloc(sizeof(struct strbuf));
+ strbuf_init(boundary, line->len);
+
++ mi->format_flowed = has_attr_value(line->buf, "format=", "flowed");
++ mi->delsp = has_attr_value(line->buf, "delsp=", "yes");
++
+ if (slurp_attr(line->buf, "boundary=", boundary)) {
+ strbuf_insert(boundary, 0, "--", 2);
+ if (++mi->content_top >= &mi->content[MAX_BOUNDARIES]) {
+@@ -964,6 +975,52 @@ static int handle_boundary(struct mailinfo *mi,
+struct strbuf *line)
+ return 1;
+ }
+
++static void handle_filter_flowed(struct mailinfo *mi, struct strbuf *line,
++ struct strbuf *prev)
++{
++ size_t len = line->len;
++ const char *rest;
++
++ if (!mi->format_flowed) {
++ handle_filter(mi, line);
++ return;
++ }
++
++ if (line->buf[len - 1] == '\n') {
++ len--;
++ if (len && line->buf[len - 1] == '\r')
++ len--;
++ }
++
++ /* Keep signature separator as-is. */
++ if (skip_prefix(line->buf, "-- ", &rest) && rest - line->buf == len) {
++ if (prev->len) {
++ handle_filter(mi, prev);
++ strbuf_reset(prev);
++ }
++ handle_filter(mi, line);
++ return;
++ }
++
++ /* Unstuff space-stuffed line. */
++ if (len && line->buf[0] == ' ') {
++ strbuf_remove(line, 0, 1);
++ len--;
++ }
++
++ /* Save flowed line for later, but without the soft line break. */
++ if (len && line->buf[len - 1] == ' ') {
++ strbuf_add(prev, line->buf, len - !!mi->delsp);
++ return;
++ }
++
++ /* Prepend any previous partial lines */
++ strbuf_insert(line, 0, prev->buf, prev->len);
++ strbuf_reset(prev);
++
++ handle_filter(mi, line);
++}
++
+ static void handle_body(struct mailinfo *mi, struct strbuf *line)
+ {
+ struct strbuf prev = STRBUF_INIT;
+@@ -1012,7 +1069,7 @@ static void handle_body(struct mailinfo *mi,
+struct strbuf *line)
+ strbuf_addbuf(&prev, sb);
+ break;
+ }
+- handle_filter(mi, sb);
++ handle_filter_flowed(mi, sb, &prev);
+ }
+ /*
+ * The partial chunk is saved in "prev" and will be
+@@ -1022,13 +1079,16 @@ static void handle_body(struct mailinfo *mi,
+struct strbuf *line)
+ break;
+ }
+ default:
+- handle_filter(mi, line);
++ handle_filter_flowed(mi, line, &prev);
+ }
+
+ if (mi->input_error)
+ break;
+ } while (!strbuf_getwholeline(line, mi->input, '\n'));
+
++ if (prev.len)
++ handle_filter(mi, &prev);
++
+ flush_inbody_header_accum(mi);
+
+ handle_body_out:
+--
+2.18.0