[270] | 1 | #include <string.h>
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[331] | 2 | #include <mruby.h>
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| 3 | #include <mruby/array.h>
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| 4 | #include <mruby/class.h>
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| 5 | #include <mruby/string.h>
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| 6 | #include <mruby/range.h>
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[270] | 7 |
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| 8 | static mrb_value
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| 9 | mrb_str_getbyte(mrb_state *mrb, mrb_value str)
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| 10 | {
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| 11 | mrb_int pos;
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| 12 | mrb_get_args(mrb, "i", &pos);
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| 13 |
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| 14 | if (pos < 0)
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| 15 | pos += RSTRING_LEN(str);
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| 16 | if (pos < 0 || RSTRING_LEN(str) <= pos)
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| 17 | return mrb_nil_value();
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| 18 |
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| 19 | return mrb_fixnum_value((unsigned char)RSTRING_PTR(str)[pos]);
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| 20 | }
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| 21 |
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| 22 | static mrb_value
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| 23 | mrb_str_setbyte(mrb_state *mrb, mrb_value str)
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| 24 | {
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| 25 | mrb_int pos, byte;
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[331] | 26 | long len;
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[270] | 27 |
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| 28 | mrb_get_args(mrb, "ii", &pos, &byte);
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| 29 |
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[331] | 30 | len = RSTRING_LEN(str);
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[270] | 31 | if (pos < -len || len <= pos)
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| 32 | mrb_raisef(mrb, E_INDEX_ERROR, "index %S is out of array", mrb_fixnum_value(pos));
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| 33 | if (pos < 0)
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| 34 | pos += len;
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| 35 |
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| 36 | mrb_str_modify(mrb, mrb_str_ptr(str));
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| 37 | byte &= 0xff;
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| 38 | RSTRING_PTR(str)[pos] = byte;
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| 39 | return mrb_fixnum_value((unsigned char)byte);
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| 40 | }
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| 41 |
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| 42 | static mrb_value
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| 43 | mrb_str_byteslice(mrb_state *mrb, mrb_value str)
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| 44 | {
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| 45 | mrb_value a1;
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| 46 | mrb_int len;
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| 47 | int argc;
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| 48 |
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| 49 | argc = mrb_get_args(mrb, "o|i", &a1, &len);
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| 50 | if (argc == 2) {
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| 51 | return mrb_str_substr(mrb, str, mrb_fixnum(a1), len);
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| 52 | }
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| 53 | switch (mrb_type(a1)) {
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| 54 | case MRB_TT_RANGE:
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| 55 | {
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| 56 | mrb_int beg;
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| 57 |
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| 58 | len = RSTRING_LEN(str);
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[331] | 59 | switch (mrb_range_beg_len(mrb, a1, &beg, &len, len, TRUE)) {
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| 60 | case 0: /* not range */
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| 61 | break;
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| 62 | case 1: /* range */
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[270] | 63 | return mrb_str_substr(mrb, str, beg, len);
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[331] | 64 | case 2: /* out of range */
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| 65 | mrb_raisef(mrb, E_RANGE_ERROR, "%S out of range", a1);
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| 66 | break;
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[270] | 67 | }
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| 68 | return mrb_nil_value();
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| 69 | }
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| 70 | case MRB_TT_FLOAT:
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| 71 | a1 = mrb_fixnum_value((mrb_int)mrb_float(a1));
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| 72 | /* fall through */
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| 73 | case MRB_TT_FIXNUM:
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| 74 | return mrb_str_substr(mrb, str, mrb_fixnum(a1), 1);
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| 75 | default:
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| 76 | mrb_raise(mrb, E_TYPE_ERROR, "wrong type of argument");
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| 77 | }
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| 78 | /* not reached */
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| 79 | return mrb_nil_value();
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| 80 | }
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| 81 |
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| 82 | /*
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| 83 | * call-seq:
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| 84 | * str.swapcase! -> str or nil
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| 85 | *
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| 86 | * Equivalent to <code>String#swapcase</code>, but modifies the receiver in
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| 87 | * place, returning <i>str</i>, or <code>nil</code> if no changes were made.
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| 88 | * Note: case conversion is effective only in ASCII region.
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| 89 | */
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| 90 | static mrb_value
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| 91 | mrb_str_swapcase_bang(mrb_state *mrb, mrb_value str)
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| 92 | {
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| 93 | char *p, *pend;
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| 94 | int modify = 0;
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| 95 | struct RString *s = mrb_str_ptr(str);
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| 96 |
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| 97 | mrb_str_modify(mrb, s);
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| 98 | p = RSTRING_PTR(str);
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| 99 | pend = p + RSTRING_LEN(str);
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| 100 | while (p < pend) {
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| 101 | if (ISUPPER(*p)) {
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| 102 | *p = TOLOWER(*p);
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| 103 | modify = 1;
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| 104 | }
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| 105 | else if (ISLOWER(*p)) {
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| 106 | *p = TOUPPER(*p);
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| 107 | modify = 1;
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| 108 | }
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| 109 | p++;
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| 110 | }
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| 111 |
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| 112 | if (modify) return str;
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| 113 | return mrb_nil_value();
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| 114 | }
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| 115 |
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| 116 | /*
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| 117 | * call-seq:
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| 118 | * str.swapcase -> new_str
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| 119 | *
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| 120 | * Returns a copy of <i>str</i> with uppercase alphabetic characters converted
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| 121 | * to lowercase and lowercase characters converted to uppercase.
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| 122 | * Note: case conversion is effective only in ASCII region.
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| 123 | *
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| 124 | * "Hello".swapcase #=> "hELLO"
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| 125 | * "cYbEr_PuNk11".swapcase #=> "CyBeR_pUnK11"
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| 126 | */
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| 127 | static mrb_value
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| 128 | mrb_str_swapcase(mrb_state *mrb, mrb_value self)
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| 129 | {
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| 130 | mrb_value str;
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| 131 |
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| 132 | str = mrb_str_dup(mrb, self);
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| 133 | mrb_str_swapcase_bang(mrb, str);
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| 134 | return str;
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| 135 | }
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| 136 |
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[331] | 137 | static mrb_value mrb_fixnum_chr(mrb_state *mrb, mrb_value num);
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| 138 |
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[270] | 139 | /*
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| 140 | * call-seq:
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| 141 | * str << integer -> str
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| 142 | * str.concat(integer) -> str
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| 143 | * str << obj -> str
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| 144 | * str.concat(obj) -> str
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| 145 | *
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| 146 | * Append---Concatenates the given object to <i>str</i>. If the object is a
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| 147 | * <code>Integer</code>, it is considered as a codepoint, and is converted
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| 148 | * to a character before concatenation.
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| 149 | *
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| 150 | * a = "hello "
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| 151 | * a << "world" #=> "hello world"
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| 152 | * a.concat(33) #=> "hello world!"
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| 153 | */
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| 154 | static mrb_value
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| 155 | mrb_str_concat2(mrb_state *mrb, mrb_value self)
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| 156 | {
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| 157 | mrb_value str;
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[331] | 158 |
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| 159 | mrb_get_args(mrb, "o", &str);
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| 160 | if (mrb_fixnum_p(str))
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| 161 | str = mrb_fixnum_chr(mrb, str);
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| 162 | else
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| 163 | str = mrb_string_type(mrb, str);
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[270] | 164 | mrb_str_concat(mrb, self, str);
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| 165 | return self;
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| 166 | }
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| 167 |
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| 168 | /*
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| 169 | * call-seq:
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| 170 | * str.start_with?([prefixes]+) -> true or false
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| 171 | *
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| 172 | * Returns true if +str+ starts with one of the +prefixes+ given.
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| 173 | *
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| 174 | * "hello".start_with?("hell") #=> true
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| 175 | *
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| 176 | * # returns true if one of the prefixes matches.
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| 177 | * "hello".start_with?("heaven", "hell") #=> true
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| 178 | * "hello".start_with?("heaven", "paradise") #=> false
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| 179 | * "h".start_with?("heaven", "hell") #=> false
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| 180 | */
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| 181 | static mrb_value
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| 182 | mrb_str_start_with(mrb_state *mrb, mrb_value self)
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| 183 | {
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| 184 | mrb_value *argv, sub;
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| 185 | mrb_int argc, i;
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| 186 | mrb_get_args(mrb, "*", &argv, &argc);
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| 187 |
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| 188 | for (i = 0; i < argc; i++) {
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| 189 | size_t len_l, len_r;
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| 190 | int ai = mrb_gc_arena_save(mrb);
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| 191 | sub = mrb_string_type(mrb, argv[i]);
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| 192 | mrb_gc_arena_restore(mrb, ai);
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| 193 | len_l = RSTRING_LEN(self);
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| 194 | len_r = RSTRING_LEN(sub);
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| 195 | if (len_l >= len_r) {
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| 196 | if (memcmp(RSTRING_PTR(self), RSTRING_PTR(sub), len_r) == 0) {
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| 197 | return mrb_true_value();
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| 198 | }
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| 199 | }
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| 200 | }
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| 201 | return mrb_false_value();
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| 202 | }
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| 203 |
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| 204 | /*
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| 205 | * call-seq:
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| 206 | * str.end_with?([suffixes]+) -> true or false
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| 207 | *
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| 208 | * Returns true if +str+ ends with one of the +suffixes+ given.
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| 209 | */
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| 210 | static mrb_value
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| 211 | mrb_str_end_with(mrb_state *mrb, mrb_value self)
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| 212 | {
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| 213 | mrb_value *argv, sub;
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| 214 | mrb_int argc, i;
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| 215 | mrb_get_args(mrb, "*", &argv, &argc);
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| 216 |
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| 217 | for (i = 0; i < argc; i++) {
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| 218 | size_t len_l, len_r;
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| 219 | int ai = mrb_gc_arena_save(mrb);
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| 220 | sub = mrb_string_type(mrb, argv[i]);
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| 221 | mrb_gc_arena_restore(mrb, ai);
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| 222 | len_l = RSTRING_LEN(self);
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| 223 | len_r = RSTRING_LEN(sub);
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| 224 | if (len_l >= len_r) {
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| 225 | if (memcmp(RSTRING_PTR(self) + (len_l - len_r),
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| 226 | RSTRING_PTR(sub),
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| 227 | len_r) == 0) {
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| 228 | return mrb_true_value();
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| 229 | }
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| 230 | }
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| 231 | }
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| 232 | return mrb_false_value();
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| 233 | }
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| 234 |
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| 235 | static mrb_value
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| 236 | mrb_str_hex(mrb_state *mrb, mrb_value self)
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| 237 | {
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| 238 | return mrb_str_to_inum(mrb, self, 16, FALSE);
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| 239 | }
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| 240 |
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| 241 | static mrb_value
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| 242 | mrb_str_oct(mrb_state *mrb, mrb_value self)
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| 243 | {
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| 244 | return mrb_str_to_inum(mrb, self, 8, FALSE);
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| 245 | }
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| 246 |
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| 247 | /*
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| 248 | * call-seq:
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| 249 | * string.chr -> string
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| 250 | *
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| 251 | * Returns a one-character string at the beginning of the string.
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| 252 | *
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| 253 | * a = "abcde"
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| 254 | * a.chr #=> "a"
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| 255 | */
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| 256 | static mrb_value
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| 257 | mrb_str_chr(mrb_state *mrb, mrb_value self)
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| 258 | {
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| 259 | return mrb_str_substr(mrb, self, 0, 1);
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| 260 | }
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| 261 |
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| 262 | static mrb_value
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| 263 | mrb_fixnum_chr(mrb_state *mrb, mrb_value num)
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| 264 | {
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| 265 | mrb_int cp = mrb_fixnum(num);
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| 266 | #ifdef MRB_UTF8_STRING
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| 267 | char utf8[4];
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| 268 | mrb_int len;
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| 269 |
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| 270 | if (cp < 0 || 0x10FFFF < cp) {
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| 271 | mrb_raisef(mrb, E_RANGE_ERROR, "%S out of char range", num);
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| 272 | }
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| 273 | if (cp < 0x80) {
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| 274 | utf8[0] = (char)cp;
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| 275 | len = 1;
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| 276 | }
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| 277 | else if (cp < 0x800) {
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| 278 | utf8[0] = (char)(0xC0 | (cp >> 6));
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| 279 | utf8[1] = (char)(0x80 | (cp & 0x3F));
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| 280 | len = 2;
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| 281 | }
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| 282 | else if (cp < 0x10000) {
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| 283 | utf8[0] = (char)(0xE0 | (cp >> 12));
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| 284 | utf8[1] = (char)(0x80 | ((cp >> 6) & 0x3F));
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| 285 | utf8[2] = (char)(0x80 | ( cp & 0x3F));
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| 286 | len = 3;
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| 287 | }
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| 288 | else {
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| 289 | utf8[0] = (char)(0xF0 | (cp >> 18));
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| 290 | utf8[1] = (char)(0x80 | ((cp >> 12) & 0x3F));
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| 291 | utf8[2] = (char)(0x80 | ((cp >> 6) & 0x3F));
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| 292 | utf8[3] = (char)(0x80 | ( cp & 0x3F));
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| 293 | len = 4;
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| 294 | }
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| 295 | return mrb_str_new(mrb, utf8, len);
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| 296 | #else
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| 297 | char c;
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| 298 |
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| 299 | if (cp < 0 || 0xff < cp) {
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| 300 | mrb_raisef(mrb, E_RANGE_ERROR, "%S out of char range", num);
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| 301 | }
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| 302 | c = (char)cp;
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| 303 | return mrb_str_new(mrb, &c, 1);
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| 304 | #endif
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| 305 | }
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| 306 |
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| 307 | /*
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| 308 | * call-seq:
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| 309 | * string.lines -> array of string
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| 310 | *
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| 311 | * Returns strings per line;
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| 312 | *
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| 313 | * a = "abc\ndef"
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| 314 | * a.lines #=> ["abc\n", "def"]
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| 315 | */
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| 316 | static mrb_value
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| 317 | mrb_str_lines(mrb_state *mrb, mrb_value self)
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| 318 | {
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| 319 | mrb_value result;
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| 320 | mrb_value blk;
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| 321 | int ai;
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| 322 | mrb_int len;
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| 323 | mrb_value arg;
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[331] | 324 | char *b = RSTRING_PTR(self);
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| 325 | char *p = b, *t;
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| 326 | char *e = b + RSTRING_LEN(self);
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[270] | 327 |
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| 328 | mrb_get_args(mrb, "&", &blk);
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| 329 |
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| 330 | result = mrb_ary_new(mrb);
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[331] | 331 | ai = mrb_gc_arena_save(mrb);
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[270] | 332 | if (!mrb_nil_p(blk)) {
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| 333 | while (p < e) {
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| 334 | t = p;
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| 335 | while (p < e && *p != '\n') p++;
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| 336 | if (*p == '\n') p++;
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| 337 | len = (mrb_int) (p - t);
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| 338 | arg = mrb_str_new(mrb, t, len);
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| 339 | mrb_yield_argv(mrb, blk, 1, &arg);
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[331] | 340 | mrb_gc_arena_restore(mrb, ai);
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| 341 | if (b != RSTRING_PTR(self)) {
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| 342 | ptrdiff_t diff = p - b;
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| 343 | b = RSTRING_PTR(self);
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| 344 | p = b + diff;
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| 345 | }
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| 346 | e = b + RSTRING_LEN(self);
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[270] | 347 | }
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| 348 | return self;
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| 349 | }
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| 350 | while (p < e) {
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| 351 | t = p;
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| 352 | while (p < e && *p != '\n') p++;
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| 353 | if (*p == '\n') p++;
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| 354 | len = (mrb_int) (p - t);
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| 355 | mrb_ary_push(mrb, result, mrb_str_new(mrb, t, len));
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| 356 | mrb_gc_arena_restore(mrb, ai);
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| 357 | }
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| 358 | return result;
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| 359 | }
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| 360 |
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| 361 | /*
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| 362 | * call-seq:
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| 363 | * string.succ -> string
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| 364 | *
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| 365 | * Returns next sequence of the string;
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| 366 | *
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| 367 | * a = "abc"
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| 368 | * a.succ #=> "abd"
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| 369 | */
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| 370 | static mrb_value
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| 371 | mrb_str_succ_bang(mrb_state *mrb, mrb_value self)
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| 372 | {
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| 373 | mrb_value result;
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| 374 | unsigned char *p, *e, *b, *t;
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| 375 | const char *prepend;
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| 376 | struct RString *s = mrb_str_ptr(self);
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[331] | 377 | mrb_int l;
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[270] | 378 |
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| 379 | if (RSTRING_LEN(self) == 0)
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| 380 | return self;
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| 381 |
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| 382 | mrb_str_modify(mrb, s);
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| 383 | l = RSTRING_LEN(self);
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| 384 | b = p = (unsigned char*) RSTRING_PTR(self);
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| 385 | t = e = p + l;
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| 386 | *(e--) = 0;
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| 387 |
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| 388 | // find trailing ascii/number
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| 389 | while (e >= b) {
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| 390 | if (ISALNUM(*e))
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| 391 | break;
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| 392 | e--;
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| 393 | }
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| 394 | if (e < b) {
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| 395 | e = p + l - 1;
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| 396 | result = mrb_str_new_lit(mrb, "");
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[331] | 397 | }
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| 398 | else {
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[270] | 399 | // find leading letter of the ascii/number
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| 400 | b = e;
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| 401 | while (b > p) {
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| 402 | if (!ISALNUM(*b) || (ISALNUM(*b) && *b != '9' && *b != 'z' && *b != 'Z'))
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| 403 | break;
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| 404 | b--;
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| 405 | }
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| 406 | if (!ISALNUM(*b))
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| 407 | b++;
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| 408 | result = mrb_str_new(mrb, (char*) p, b - p);
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| 409 | }
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| 410 |
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| 411 | while (e >= b) {
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| 412 | if (!ISALNUM(*e)) {
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| 413 | if (*e == 0xff) {
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| 414 | mrb_str_cat_lit(mrb, result, "\x01");
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| 415 | (*e) = 0;
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[331] | 416 | }
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| 417 | else
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[270] | 418 | (*e)++;
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| 419 | break;
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| 420 | }
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| 421 | prepend = NULL;
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| 422 | if (*e == '9') {
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| 423 | if (e == b) prepend = "1";
|
---|
| 424 | *e = '0';
|
---|
[331] | 425 | }
|
---|
| 426 | else if (*e == 'z') {
|
---|
[270] | 427 | if (e == b) prepend = "a";
|
---|
| 428 | *e = 'a';
|
---|
[331] | 429 | }
|
---|
| 430 | else if (*e == 'Z') {
|
---|
[270] | 431 | if (e == b) prepend = "A";
|
---|
| 432 | *e = 'A';
|
---|
[331] | 433 | }
|
---|
| 434 | else {
|
---|
[270] | 435 | (*e)++;
|
---|
| 436 | break;
|
---|
| 437 | }
|
---|
| 438 | if (prepend) mrb_str_cat_cstr(mrb, result, prepend);
|
---|
| 439 | e--;
|
---|
| 440 | }
|
---|
| 441 | result = mrb_str_cat(mrb, result, (char*) b, t - b);
|
---|
| 442 | l = RSTRING_LEN(result);
|
---|
| 443 | mrb_str_resize(mrb, self, l);
|
---|
| 444 | memcpy(RSTRING_PTR(self), RSTRING_PTR(result), l);
|
---|
| 445 | return self;
|
---|
| 446 | }
|
---|
| 447 |
|
---|
| 448 | static mrb_value
|
---|
| 449 | mrb_str_succ(mrb_state *mrb, mrb_value self)
|
---|
| 450 | {
|
---|
| 451 | mrb_value str;
|
---|
| 452 |
|
---|
| 453 | str = mrb_str_dup(mrb, self);
|
---|
| 454 | mrb_str_succ_bang(mrb, str);
|
---|
| 455 | return str;
|
---|
| 456 | }
|
---|
| 457 |
|
---|
| 458 | #ifdef MRB_UTF8_STRING
|
---|
| 459 | static const char utf8len_codepage_zero[256] =
|
---|
| 460 | {
|
---|
| 461 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
|
---|
| 462 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
|
---|
| 463 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
|
---|
| 464 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
|
---|
| 465 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
---|
| 466 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
---|
| 467 | 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
|
---|
| 468 | 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,0,0,0,0,0,0,0,0,0,0,0,
|
---|
| 469 | };
|
---|
| 470 |
|
---|
| 471 | static mrb_int
|
---|
| 472 | utf8code(unsigned char* p)
|
---|
| 473 | {
|
---|
| 474 | mrb_int len;
|
---|
| 475 |
|
---|
| 476 | if (p[0] < 0x80)
|
---|
| 477 | return p[0];
|
---|
| 478 |
|
---|
| 479 | len = utf8len_codepage_zero[p[0]];
|
---|
| 480 | if (len > 1 && (p[1] & 0xc0) == 0x80) {
|
---|
| 481 | if (len == 2)
|
---|
| 482 | return ((p[0] & 0x1f) << 6) + (p[1] & 0x3f);
|
---|
| 483 | if ((p[2] & 0xc0) == 0x80) {
|
---|
| 484 | if (len == 3)
|
---|
| 485 | return ((p[0] & 0x0f) << 12) + ((p[1] & 0x3f) << 6)
|
---|
| 486 | + (p[2] & 0x3f);
|
---|
| 487 | if ((p[3] & 0xc0) == 0x80) {
|
---|
| 488 | if (len == 4)
|
---|
| 489 | return ((p[0] & 0x07) << 18) + ((p[1] & 0x3f) << 12)
|
---|
| 490 | + ((p[2] & 0x3f) << 6) + (p[3] & 0x3f);
|
---|
| 491 | if ((p[4] & 0xc0) == 0x80) {
|
---|
| 492 | if (len == 5)
|
---|
| 493 | return ((p[0] & 0x03) << 24) + ((p[1] & 0x3f) << 18)
|
---|
| 494 | + ((p[2] & 0x3f) << 12) + ((p[3] & 0x3f) << 6)
|
---|
| 495 | + (p[4] & 0x3f);
|
---|
| 496 | if ((p[5] & 0xc0) == 0x80 && len == 6)
|
---|
| 497 | return ((p[0] & 0x01) << 30) + ((p[1] & 0x3f) << 24)
|
---|
| 498 | + ((p[2] & 0x3f) << 18) + ((p[3] & 0x3f) << 12)
|
---|
| 499 | + ((p[4] & 0x3f) << 6) + (p[5] & 0x3f);
|
---|
| 500 | }
|
---|
| 501 | }
|
---|
| 502 | }
|
---|
| 503 | }
|
---|
| 504 | return p[0];
|
---|
| 505 | }
|
---|
| 506 |
|
---|
| 507 | static mrb_value
|
---|
| 508 | mrb_str_ord(mrb_state* mrb, mrb_value str)
|
---|
| 509 | {
|
---|
| 510 | if (RSTRING_LEN(str) == 0)
|
---|
| 511 | mrb_raise(mrb, E_ARGUMENT_ERROR, "empty string");
|
---|
| 512 | return mrb_fixnum_value(utf8code((unsigned char*) RSTRING_PTR(str)));
|
---|
| 513 | }
|
---|
| 514 | #else
|
---|
| 515 | static mrb_value
|
---|
| 516 | mrb_str_ord(mrb_state* mrb, mrb_value str)
|
---|
| 517 | {
|
---|
| 518 | if (RSTRING_LEN(str) == 0)
|
---|
| 519 | mrb_raise(mrb, E_ARGUMENT_ERROR, "empty string");
|
---|
[331] | 520 | return mrb_fixnum_value((unsigned char)RSTRING_PTR(str)[0]);
|
---|
[270] | 521 | }
|
---|
| 522 | #endif
|
---|
| 523 |
|
---|
[331] | 524 | static mrb_bool
|
---|
| 525 | all_digits_p(const char *s, mrb_int len)
|
---|
| 526 | {
|
---|
| 527 | while (len-- > 0) {
|
---|
| 528 | if (!ISDIGIT(*s)) return FALSE;
|
---|
| 529 | s++;
|
---|
| 530 | }
|
---|
| 531 | return TRUE;
|
---|
| 532 | }
|
---|
| 533 |
|
---|
| 534 | /*
|
---|
| 535 | * call-seq:
|
---|
| 536 | * str.upto(other_str, exclusive=false) {|s| block } -> str
|
---|
| 537 | * str.upto(other_str, exclusive=false) -> an_enumerator
|
---|
| 538 | *
|
---|
| 539 | * Iterates through successive values, starting at <i>str</i> and
|
---|
| 540 | * ending at <i>other_str</i> inclusive, passing each value in turn to
|
---|
| 541 | * the block. The <code>String#succ</code> method is used to generate
|
---|
| 542 | * each value. If optional second argument exclusive is omitted or is false,
|
---|
| 543 | * the last value will be included; otherwise it will be excluded.
|
---|
| 544 | *
|
---|
| 545 | * If no block is given, an enumerator is returned instead.
|
---|
| 546 | *
|
---|
| 547 | * "a8".upto("b6") {|s| print s, ' ' }
|
---|
| 548 | * for s in "a8".."b6"
|
---|
| 549 | * print s, ' '
|
---|
| 550 | * end
|
---|
| 551 | *
|
---|
| 552 | * <em>produces:</em>
|
---|
| 553 | *
|
---|
| 554 | * a8 a9 b0 b1 b2 b3 b4 b5 b6
|
---|
| 555 | * a8 a9 b0 b1 b2 b3 b4 b5 b6
|
---|
| 556 | *
|
---|
| 557 | * If <i>str</i> and <i>other_str</i> contains only ascii numeric characters,
|
---|
| 558 | * both are recognized as decimal numbers. In addition, the width of
|
---|
| 559 | * string (e.g. leading zeros) is handled appropriately.
|
---|
| 560 | *
|
---|
| 561 | * "9".upto("11").to_a #=> ["9", "10", "11"]
|
---|
| 562 | * "25".upto("5").to_a #=> []
|
---|
| 563 | * "07".upto("11").to_a #=> ["07", "08", "09", "10", "11"]
|
---|
| 564 | */
|
---|
| 565 | static mrb_value
|
---|
| 566 | mrb_str_upto(mrb_state *mrb, mrb_value beg)
|
---|
| 567 | {
|
---|
| 568 | mrb_value end;
|
---|
| 569 | mrb_value exclusive = mrb_false_value();
|
---|
| 570 | mrb_value block = mrb_nil_value();
|
---|
| 571 | mrb_value current, after_end;
|
---|
| 572 | mrb_int n;
|
---|
| 573 | mrb_bool excl;
|
---|
| 574 |
|
---|
| 575 | mrb_get_args(mrb, "o|o&", &end, &exclusive, &block);
|
---|
| 576 |
|
---|
| 577 | if (mrb_nil_p(block)) {
|
---|
| 578 | return mrb_funcall(mrb, beg, "to_enum", 3, mrb_symbol_value(mrb_intern_lit(mrb, "upto")), end, exclusive);
|
---|
| 579 | }
|
---|
| 580 | end = mrb_string_type(mrb, end);
|
---|
| 581 | excl = mrb_test(exclusive);
|
---|
| 582 |
|
---|
| 583 | /* single character */
|
---|
| 584 | if (RSTRING_LEN(beg) == 1 && RSTRING_LEN(end) == 1 &&
|
---|
| 585 | ISASCII(RSTRING_PTR(beg)[0]) && ISASCII(RSTRING_PTR(end)[0])) {
|
---|
| 586 | char c = RSTRING_PTR(beg)[0];
|
---|
| 587 | char e = RSTRING_PTR(end)[0];
|
---|
| 588 | int ai = mrb_gc_arena_save(mrb);
|
---|
| 589 |
|
---|
| 590 | if (c > e || (excl && c == e)) return beg;
|
---|
| 591 | for (;;) {
|
---|
| 592 | mrb_yield(mrb, block, mrb_str_new(mrb, &c, 1));
|
---|
| 593 | mrb_gc_arena_restore(mrb, ai);
|
---|
| 594 | if (!excl && c == e) break;
|
---|
| 595 | c++;
|
---|
| 596 | if (excl && c == e) break;
|
---|
| 597 | }
|
---|
| 598 | return beg;
|
---|
| 599 | }
|
---|
| 600 | /* both edges are all digits */
|
---|
| 601 | if (ISDIGIT(RSTRING_PTR(beg)[0]) && ISDIGIT(RSTRING_PTR(end)[0]) &&
|
---|
| 602 | all_digits_p(RSTRING_PTR(beg), RSTRING_LEN(beg)) &&
|
---|
| 603 | all_digits_p(RSTRING_PTR(end), RSTRING_LEN(end))) {
|
---|
| 604 | int ai = mrb_gc_arena_save(mrb);
|
---|
| 605 | mrb_int min_width = RSTRING_LEN(beg);
|
---|
| 606 | mrb_int max_width = RSTRING_LEN(end);
|
---|
| 607 | mrb_int bi = mrb_int(mrb, mrb_str_to_inum(mrb, beg, 10, FALSE));
|
---|
| 608 | mrb_int ei = mrb_int(mrb, mrb_str_to_inum(mrb, end, 10, FALSE));
|
---|
| 609 | mrb_value str = mrb_str_new(mrb, NULL, max_width);
|
---|
| 610 | char *buf = RSTRING_PTR(str);
|
---|
| 611 |
|
---|
| 612 | while (bi <= ei) {
|
---|
| 613 | if (excl && bi == ei) break;
|
---|
| 614 | snprintf(buf, max_width+1, "%.*" MRB_PRId, (int)min_width, bi);
|
---|
| 615 | mrb_yield(mrb, block, mrb_str_new(mrb, buf, strlen(buf)));
|
---|
| 616 | mrb_gc_arena_restore(mrb, ai);
|
---|
| 617 | bi++;
|
---|
| 618 | }
|
---|
| 619 |
|
---|
| 620 | return beg;
|
---|
| 621 | }
|
---|
| 622 | /* normal case */
|
---|
| 623 | n = mrb_int(mrb, mrb_funcall(mrb, beg, "<=>", 1, end));
|
---|
| 624 | if (n > 0 || (excl && n == 0)) return beg;
|
---|
| 625 |
|
---|
| 626 | after_end = mrb_funcall(mrb, end, "succ", 0);
|
---|
| 627 | current = mrb_str_dup(mrb, beg);
|
---|
| 628 | while (!mrb_str_equal(mrb, current, after_end)) {
|
---|
| 629 | int ai = mrb_gc_arena_save(mrb);
|
---|
| 630 | mrb_value next = mrb_nil_value();
|
---|
| 631 | if (excl || !mrb_str_equal(mrb, current, end))
|
---|
| 632 | next = mrb_funcall(mrb, current, "succ", 0);
|
---|
| 633 | mrb_yield(mrb, block, current);
|
---|
| 634 | if (mrb_nil_p(next)) break;
|
---|
| 635 | current = mrb_str_to_str(mrb, next);
|
---|
| 636 | if (excl && mrb_str_equal(mrb, current, end)) break;
|
---|
| 637 | if (RSTRING_LEN(current) > RSTRING_LEN(end) || RSTRING_LEN(current) == 0)
|
---|
| 638 | break;
|
---|
| 639 | mrb_gc_arena_restore(mrb, ai);
|
---|
| 640 | }
|
---|
| 641 |
|
---|
| 642 | return beg;
|
---|
| 643 | }
|
---|
| 644 |
|
---|
[270] | 645 | void
|
---|
| 646 | mrb_mruby_string_ext_gem_init(mrb_state* mrb)
|
---|
| 647 | {
|
---|
| 648 | struct RClass * s = mrb->string_class;
|
---|
| 649 |
|
---|
| 650 | mrb_define_method(mrb, s, "dump", mrb_str_dump, MRB_ARGS_NONE());
|
---|
| 651 | mrb_define_method(mrb, s, "getbyte", mrb_str_getbyte, MRB_ARGS_REQ(1));
|
---|
| 652 | mrb_define_method(mrb, s, "setbyte", mrb_str_setbyte, MRB_ARGS_REQ(2));
|
---|
| 653 | mrb_define_method(mrb, s, "byteslice", mrb_str_byteslice, MRB_ARGS_REQ(1)|MRB_ARGS_OPT(1));
|
---|
| 654 | mrb_define_method(mrb, s, "swapcase!", mrb_str_swapcase_bang, MRB_ARGS_NONE());
|
---|
| 655 | mrb_define_method(mrb, s, "swapcase", mrb_str_swapcase, MRB_ARGS_NONE());
|
---|
| 656 | mrb_define_method(mrb, s, "concat", mrb_str_concat2, MRB_ARGS_REQ(1));
|
---|
| 657 | mrb_define_method(mrb, s, "<<", mrb_str_concat2, MRB_ARGS_REQ(1));
|
---|
| 658 | mrb_define_method(mrb, s, "start_with?", mrb_str_start_with, MRB_ARGS_REST());
|
---|
| 659 | mrb_define_method(mrb, s, "end_with?", mrb_str_end_with, MRB_ARGS_REST());
|
---|
| 660 | mrb_define_method(mrb, s, "hex", mrb_str_hex, MRB_ARGS_NONE());
|
---|
| 661 | mrb_define_method(mrb, s, "oct", mrb_str_oct, MRB_ARGS_NONE());
|
---|
| 662 | mrb_define_method(mrb, s, "chr", mrb_str_chr, MRB_ARGS_NONE());
|
---|
| 663 | mrb_define_method(mrb, s, "lines", mrb_str_lines, MRB_ARGS_NONE());
|
---|
| 664 | mrb_define_method(mrb, s, "succ", mrb_str_succ, MRB_ARGS_NONE());
|
---|
| 665 | mrb_define_method(mrb, s, "succ!", mrb_str_succ_bang, MRB_ARGS_NONE());
|
---|
| 666 | mrb_alias_method(mrb, s, mrb_intern_lit(mrb, "next"), mrb_intern_lit(mrb, "succ"));
|
---|
| 667 | mrb_alias_method(mrb, s, mrb_intern_lit(mrb, "next!"), mrb_intern_lit(mrb, "succ!"));
|
---|
| 668 | mrb_define_method(mrb, s, "ord", mrb_str_ord, MRB_ARGS_NONE());
|
---|
[331] | 669 | mrb_define_method(mrb, s, "upto", mrb_str_upto, MRB_ARGS_ANY());
|
---|
[270] | 670 |
|
---|
| 671 | mrb_define_method(mrb, mrb->fixnum_class, "chr", mrb_fixnum_chr, MRB_ARGS_NONE());
|
---|
| 672 | }
|
---|
| 673 |
|
---|
| 674 | void
|
---|
| 675 | mrb_mruby_string_ext_gem_final(mrb_state* mrb)
|
---|
| 676 | {
|
---|
| 677 | }
|
---|