diff options
Diffstat (limited to 'pretty.c')
| -rw-r--r-- | pretty.c | 49 |
1 files changed, 32 insertions, 17 deletions
@@ -231,7 +231,7 @@ static int is_rfc822_special(char ch) } } -static int has_rfc822_specials(const char *s, int len) +static int needs_rfc822_quoting(const char *s, int len) { int i; for (i = 0; i < len; i++) @@ -329,25 +329,29 @@ static int is_rfc2047_special(char ch, enum rfc2047_type type) return !(isalnum(ch) || ch == '!' || ch == '*' || ch == '+' || ch == '-' || ch == '/'); } -static void add_rfc2047(struct strbuf *sb, const char *line, int len, - const char *encoding, enum rfc2047_type type) +static int needs_rfc2047_encoding(const char *line, int len, + enum rfc2047_type type) { - static const int max_length = 78; /* per rfc2822 */ - static const int max_encoded_length = 76; /* per rfc2047 */ int i; - int line_len = last_line_length(sb); for (i = 0; i < len; i++) { int ch = line[i]; if (non_ascii(ch) || ch == '\n') - goto needquote; + return 1; if ((i + 1 < len) && (ch == '=' && line[i+1] == '?')) - goto needquote; + return 1; } - strbuf_add_wrapped_bytes(sb, line, len, -line_len, 1, max_length); - return; -needquote: + return 0; +} + +static void add_rfc2047(struct strbuf *sb, const char *line, int len, + const char *encoding, enum rfc2047_type type) +{ + static const int max_encoded_length = 76; /* per rfc2047 */ + int i; + int line_len = last_line_length(sb); + strbuf_grow(sb, len * 3 + strlen(encoding) + 100); strbuf_addf(sb, "=?%s?q?", encoding); line_len += strlen(encoding) + 5; /* 5 for =??q? */ @@ -383,6 +387,7 @@ void pp_user_info(const struct pretty_print_context *pp, const char *what, struct strbuf *sb, const char *line, const char *encoding) { + int max_length = 78; /* per rfc2822 */ char *date; int namelen; unsigned long time; @@ -406,17 +411,21 @@ void pp_user_info(const struct pretty_print_context *pp, name_tail--; display_name_length = name_tail - line; strbuf_addstr(sb, "From: "); - if (!has_rfc822_specials(line, display_name_length)) { + if (needs_rfc2047_encoding(line, display_name_length, RFC2047_ADDRESS)) { add_rfc2047(sb, line, display_name_length, encoding, RFC2047_ADDRESS); - } else { + max_length = 76; /* per rfc2047 */ + } else if (needs_rfc822_quoting(line, display_name_length)) { struct strbuf quoted = STRBUF_INIT; add_rfc822_quoted("ed, line, display_name_length); - add_rfc2047(sb, quoted.buf, quoted.len, - encoding, RFC2047_ADDRESS); + strbuf_add_wrapped_bytes(sb, quoted.buf, quoted.len, + -6, 1, max_length); strbuf_release("ed); + } else { + strbuf_add_wrapped_bytes(sb, line, display_name_length, + -6, 1, max_length); } - if (namelen - display_name_length + last_line_length(sb) > 78) { + if (namelen - display_name_length + last_line_length(sb) > max_length) { strbuf_addch(sb, '\n'); if (!isspace(name_tail[0])) strbuf_addch(sb, ' '); @@ -1336,6 +1345,7 @@ void pp_title_line(const struct pretty_print_context *pp, const char *encoding, int need_8bit_cte) { + static const int max_length = 78; /* per rfc2047 */ struct strbuf title; strbuf_init(&title, 80); @@ -1345,7 +1355,12 @@ void pp_title_line(const struct pretty_print_context *pp, strbuf_grow(sb, title.len + 1024); if (pp->subject) { strbuf_addstr(sb, pp->subject); - add_rfc2047(sb, title.buf, title.len, encoding, RFC2047_SUBJECT); + if (needs_rfc2047_encoding(title.buf, title.len, RFC2047_SUBJECT)) + add_rfc2047(sb, title.buf, title.len, + encoding, RFC2047_SUBJECT); + else + strbuf_add_wrapped_bytes(sb, title.buf, title.len, + -last_line_length(sb), 1, max_length); } else { strbuf_addbuf(sb, &title); } |