gcc/ChangeLog: * pretty-print.c (pp_write_text_as_html_like_dot_to_stream): New function. * pretty-print.h (pp_write_text_as_html_like_dot_to_stream): New decl. --- gcc/pretty-print.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++ gcc/pretty-print.h | 3 +++ 2 files changed, 51 insertions(+)
diff --git a/gcc/pretty-print.c b/gcc/pretty-print.c index 084e03c73c78..2ecb0343ba05 100644 --- a/gcc/pretty-print.c +++ b/gcc/pretty-print.c @@ -907,6 +907,54 @@ pp_write_text_as_dot_label_to_stream (pretty_printer *pp, bool for_record) pp_clear_output_area (pp); } +/* As pp_write_text_to_stream, but for GraphViz HTML-like strings. + + Flush the formatted text of pretty-printer PP onto the attached stream, + escaping these characters + " & < > + using XML escape sequences. + + http://www.graphviz.org/doc/info/lang.html#html states: + special XML escape sequences for ", &, <, and > may be necessary in + order to embed these characters in attribute values or raw text + This doesn't list "'" (which would normally be escaped in XML + as "'" or in HTML as "'");. + + Experiments show that escaping "'" doesn't seem to be necessary. */ + +void +pp_write_text_as_html_like_dot_to_stream (pretty_printer *pp) +{ + const char *text = pp_formatted_text (pp); + const char *p = text; + FILE *fp = pp_buffer (pp)->stream; + + for (;*p; p++) + { + switch (*p) + { + case '"': + fputs (""", fp); + break; + case '&': + fputs ("&", fp); + break; + case '<': + fputs ("<", fp); + break; + case '>': + fputs (">",fp); + break; + + default: + fputc (*p, fp); + break; + } + } + + pp_clear_output_area (pp); +} + /* Wrap a text delimited by START and END into PRETTY-PRINTER. */ static void pp_wrap_text (pretty_printer *pp, const char *start, const char *end) diff --git a/gcc/pretty-print.h b/gcc/pretty-print.h index 493507d41419..86b9e869eeb7 100644 --- a/gcc/pretty-print.h +++ b/gcc/pretty-print.h @@ -393,8 +393,11 @@ extern void pp_indent (pretty_printer *); extern void pp_newline (pretty_printer *); extern void pp_character (pretty_printer *, int); extern void pp_string (pretty_printer *, const char *); + extern void pp_write_text_to_stream (pretty_printer *); extern void pp_write_text_as_dot_label_to_stream (pretty_printer *, bool); +extern void pp_write_text_as_html_like_dot_to_stream (pretty_printer *pp); + extern void pp_maybe_space (pretty_printer *); extern void pp_begin_quote (pretty_printer *, bool); -- 2.21.0