diff options
Diffstat (limited to 'string.c')
| -rw-r--r-- | string.c | 89 |
1 files changed, 88 insertions, 1 deletions
@@ -1423,7 +1423,7 @@ str_inspect(str) *b++ = '\\'; *b++ = 'f'; } - else if (c == '\13') { + else if (c == '\013') { CHECK(2); *b++ = '\\'; *b++ = 'v'; @@ -1449,6 +1449,92 @@ str_inspect(str) return str_new(buf, b - buf); } +VALUE +str_dump(str) + VALUE str; +{ + int len; + UCHAR *p, *pend; + UCHAR *q, *qend; + VALUE result; + + len = 2; /* "" */ + p = RSTRING(str)->ptr; pend = p + RSTRING(str)->len; + while (p < pend) { + UCHAR c = *p++; + switch (c) { + case '"': case '\'': + case '\n': case '\r': + case '\t': case '\f': + case '\013': case '\007': case '\033': + len += 2; + break; + + default: + if (isascii(c) && isprint(c)) { + len++; + } + else { + len += 4; /* \nnn */ + } + break; + } + } + + result = str_new(0, len); + p = RSTRING(str)->ptr; pend = p + RSTRING(str)->len; + q = RSTRING(result)->ptr; qend = q + len; + + *q++ = '"'; + while (p < pend) { + UCHAR c = *p++; + + if (c == '"' || c == '\\') { + *q++ = '\\'; + *q++ = c; + } + else if (isascii(c) && isprint(c)) { + *q++ = c; + } + else if (c == '\n') { + *q++ = '\\'; + *q++ = 'n'; + } + else if (c == '\r') { + *q++ = '\\'; + *q++ = 'r'; + } + else if (c == '\t') { + *q++ = '\\'; + *q++ = 't'; + } + else if (c == '\f') { + *q++ = '\\'; + *q++ = 'f'; + } + else if (c == '\13') { + *q++ = '\\'; + *q++ = 'v'; + } + else if (c == '\007') { + *q++ = '\\'; + *q++ = 'a'; + } + else if (c == 033) { + *q++ = '\\'; + *q++ = 'e'; + } + else { + *q++ = '\\'; + sprintf(q, "%03o", c); + q += 3; + } + } + *q++ = '"'; + + return result; +} + static VALUE str_upcase_bang(str) VALUE str; @@ -2544,6 +2630,7 @@ Init_String() rb_define_method(cString, "to_f", str_to_f, 0); rb_define_method(cString, "to_s", str_to_s, 0); rb_define_method(cString, "inspect", str_inspect, 0); + rb_define_method(cString, "dump", str_dump, 0); rb_define_method(cString, "upcase", str_upcase, 0); rb_define_method(cString, "downcase", str_downcase, 0); |