diff options
Diffstat (limited to 'src/cairo-scaled-font-subsets.c')
| -rw-r--r--[-rwxr-xr-x] | src/cairo-scaled-font-subsets.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/cairo-scaled-font-subsets.c b/src/cairo-scaled-font-subsets.c index e78e0c283..212176183 100755..100644 --- a/src/cairo-scaled-font-subsets.c +++ b/src/cairo-scaled-font-subsets.c @@ -1256,4 +1256,44 @@ CLEANUP_HASH: return status; } +cairo_int_status_t +_cairo_escape_ps_name (char **ps_name) +{ + cairo_status_t status = CAIRO_STATUS_SUCCESS; + + /* Ensure PS name is a valid PDF/PS name object. In PDF names are + * treated as UTF8 and non ASCII bytes, ' ', and '#' are encoded + * as '#' followed by 2 hex digits that encode the byte. By also + * encoding the characters in the reserved string we ensure the + * name is also PS compatible. */ + if (*ps_name) { + static const char *reserved = "()<>[]{}/%#\\"; + char buf[128]; /* max name length is 127 bytes */ + char *src = *ps_name; + char *dst = buf; + + while (*src && dst < buf + 127) { + unsigned char c = *src; + if (c < 0x21 || c > 0x7e || strchr (reserved, c)) { + if (dst + 4 > buf + 127) + break; + + snprintf (dst, 4, "#%02X", c); + src++; + dst += 3; + } else { + *dst++ = *src++; + } + } + *dst = 0; + free (*ps_name); + *ps_name = strdup (buf); + if (*ps_name == NULL) { + status = _cairo_error (CAIRO_STATUS_NO_MEMORY); + } + } + + return status; +} + #endif /* CAIRO_HAS_FONT_SUBSET */ |