mailinfo: move content/content_top to struct mailinfo

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/mailinfo.c b/builtin/mailinfo.c
index 315d542188b506f8d80ca08f49a6f9dfd60443c7..93043255ad69842840565186751cbc08aac7b4f9 100644 (file)
--- a/builtin/mailinfo.c
+++ b/builtin/mailinfo.c
@@ -7,6 +7,8 @@
 #include "utf8.h"
 #include "strbuf.h"
 
+#define MAX_BOUNDARIES 5
+
 struct mailinfo {
        FILE *input;
        FILE *output;
@@ -22,6 +24,8 @@ struct mailinfo {
        int use_inbody_headers;
        const char *metainfo_charset;
 
+       struct strbuf *content[MAX_BOUNDARIES];
+       struct strbuf **content_top;
        struct strbuf charset;
        char *message_id;
        enum  {
@@ -34,8 +38,6 @@ struct mailinfo {
        struct strbuf **s_hdr_data;
 };
 
-#define MAX_BOUNDARIES 5
-
 static void cleanup_space(struct strbuf *sb)
 {
        size_t pos, cnt;
@@ -188,10 +190,6 @@ static int slurp_attr(const char *line, const char *name, struct strbuf *attr)
        return 1;
 }
 
-static struct strbuf *content[MAX_BOUNDARIES];
-
-static struct strbuf **content_top = content;
-
 static void handle_content_type(struct mailinfo *mi, struct strbuf *line)
 {
        struct strbuf *boundary = xmalloc(sizeof(struct strbuf));
@@ -199,11 +197,11 @@ static void handle_content_type(struct mailinfo *mi, struct strbuf *line)
 
        if (slurp_attr(line->buf, "boundary=", boundary)) {
                strbuf_insert(boundary, 0, "--", 2);
-               if (++content_top >= &content[MAX_BOUNDARIES]) {
+               if (++mi->content_top >= &mi->content[MAX_BOUNDARIES]) {
                        fprintf(stderr, "Too many boundaries to handle\n");
                        exit(1);
                }
-               *content_top = boundary;
+               *(mi->content_top) = boundary;
                boundary = NULL;
        }
        slurp_attr(line->buf, "charset=", &mi->charset);
@@ -231,10 +229,12 @@ static void handle_content_transfer_encoding(struct mailinfo *mi,
                mi->transfer_encoding = TE_DONTCARE;
 }
 
-static int is_multipart_boundary(const struct strbuf *line)
+static int is_multipart_boundary(struct mailinfo *mi, const struct strbuf *line)
 {
-       return (((*content_top)->len <= line->len) &&
-               !memcmp(line->buf, (*content_top)->buf, (*content_top)->len));
+       struct strbuf *content_top = *(mi->content_top);
+
+       return ((content_top->len <= line->len) &&
+               !memcmp(line->buf, content_top->buf, content_top->len));
 }
 
 static void cleanup_subject(struct mailinfo *mi, struct strbuf *subject)
@@ -797,7 +797,7 @@ static int read_one_header_line(struct strbuf *line, FILE *in)
 static int find_boundary(struct mailinfo *mi, struct strbuf *line)
 {
        while (!strbuf_getline(line, mi->input, '\n')) {
-               if (*content_top && is_multipart_boundary(line))
+               if (*(mi->content_top) && is_multipart_boundary(mi, line))
                        return 1;
        }
        return 0;
@@ -809,18 +809,18 @@ static int handle_boundary(struct mailinfo *mi, struct strbuf *line)
 
        strbuf_addch(&newline, '\n');
 again:
-       if (line->len >= (*content_top)->len + 2 &&
-           !memcmp(line->buf + (*content_top)->len, "--", 2)) {
+       if (line->len >= (*(mi->content_top))->len + 2 &&
+           !memcmp(line->buf + (*(mi->content_top))->len, "--", 2)) {
                /* we hit an end boundary */
                /* pop the current boundary off the stack */
-               strbuf_release(*content_top);
-               free(*content_top);
-               *content_top = NULL;
+               strbuf_release(*(mi->content_top));
+               free(*(mi->content_top));
+               *(mi->content_top) = NULL;
 
                /* technically won't happen as is_multipart_boundary()
                   will fail first.  But just in case..
                 */
-               if (--content_top < content) {
+               if (--mi->content_top < mi->content) {
                        fprintf(stderr, "Detected mismatched boundaries, "
                                        "can't recover\n");
                        exit(1);
@@ -855,14 +855,14 @@ static void handle_body(struct mailinfo *mi, struct strbuf *line)
        struct strbuf prev = STRBUF_INIT;
 
        /* Skip up to the first boundary */
-       if (*content_top) {
+       if (*(mi->content_top)) {
                if (!find_boundary(mi, line))
                        goto handle_body_out;
        }
 
        do {
                /* process any boundary lines */
-               if (*content_top && is_multipart_boundary(line)) {
+               if (*(mi->content_top) && is_multipart_boundary(mi, line)) {
                        /* flush any leftover */
                        if (prev.len) {
                                handle_filter(mi, &prev);
@@ -1026,6 +1026,7 @@ static void setup_mailinfo(struct mailinfo *mi)
        strbuf_init(&mi->charset, 0);
        mi->header_stage = 1;
        mi->use_inbody_headers = 1;
+       mi->content_top = mi->content;
        git_config(git_mailinfo_config, &mi);
 }
 
@@ -1044,6 +1045,11 @@ static void clear_mailinfo(struct mailinfo *mi)
        for (i = 0; mi->s_hdr_data[i]; i++)
                strbuf_release(mi->s_hdr_data[i]);
        free(mi->s_hdr_data);
+
+       while (mi->content < mi->content_top) {
+               free(*(mi->content_top));
+               mi->content_top--;
+       }
 }
 
 static const char mailinfo_usage[] =