diff options
Diffstat (limited to 'sprintf.c')
| -rw-r--r-- | sprintf.c | 1491 |
1 files changed, 1065 insertions, 426 deletions
@@ -2,62 +2,32 @@ sprintf.c - - $Author: matz $ - $Date: 2006/07/28 16:27:42 $ + $Author$ created at: Fri Oct 15 10:39:26 JST 1993 - Copyright (C) 1993-2003 Yukihiro Matsumoto + Copyright (C) 1993-2007 Yukihiro Matsumoto Copyright (C) 2000 Network Applied Communication Laboratory, Inc. Copyright (C) 2000 Information-technology Promotion Agency, Japan **********************************************************************/ -#include "ruby.h" -#include "re.h" -#include <ctype.h> +#include "internal.h" +#include "ruby/re.h" +#include "id.h" #include <math.h> +#include <stdarg.h> -#define BIT_DIGITS(N) (((N)*146)/485 + 1) /* log2(10) =~ 146/485 */ - -static void fmt_setup _((char*,int,int,int,int)); +#ifdef HAVE_IEEEFP_H +#include <ieeefp.h> +#endif -static char* -remove_sign_bits(str, base) - char *str; - int base; -{ - char *s, *t; - - s = t = str; - - if (base == 16) { - while (*t == 'f') { - t++; - } - } - else if (base == 8) { - if (*t == '3') t++; - while (*t == '7') { - t++; - } - } - else if (base == 2) { - while (*t == '1') { - t++; - } - } - if (t > s) { - while (*t) *s++ = *t++; - *s = '\0'; - } +#define BIT_DIGITS(N) (((N)*146)/485 + 1) /* log2(10) =~ 146/485 */ - return str; -} +static char *fmt_setup(char*,size_t,int,int,int,int); +static char *ruby_ultoa(unsigned long val, char *endp, int base, int octzero); static char -sign_bits(base, p) - int base; - const char *p; +sign_bits(int base, const char *p) { char c = '.'; @@ -85,43 +55,58 @@ sign_bits(base, p) #define FPREC0 128 #define CHECK(l) do {\ - while (blen + (l) >= bsiz) {\ + int cr = ENC_CODERANGE(result);\ + while ((l) >= bsiz - blen) {\ bsiz*=2;\ + if (bsiz<0) rb_raise(rb_eArgError, "too big specifier");\ }\ rb_str_resize(result, bsiz);\ - buf = RSTRING(result)->ptr;\ + ENC_CODERANGE_SET(result, cr);\ + buf = RSTRING_PTR(result);\ } while (0) #define PUSH(s, l) do { \ CHECK(l);\ - memcpy(&buf[blen], s, l);\ + PUSH_(s, l);\ +} while (0) + +#define PUSH_(s, l) do { \ + memcpy(&buf[blen], (s), (l));\ + blen += (l);\ +} while (0) + +#define FILL(c, l) do { \ + if ((l) <= 0) break;\ + CHECK(l);\ + FILL_(c, l);\ +} while (0) + +#define FILL_(c, l) do { \ + memset(&buf[blen], (c), (l));\ blen += (l);\ } while (0) #define GETARG() (nextvalue != Qundef ? nextvalue : \ - posarg < 0 ? \ - (rb_raise(rb_eArgError, "unnumbered(%d) mixed with numbered", nextarg), 0) : \ + GETNEXTARG()) + +#define GETNEXTARG() ( \ + check_next_arg(posarg, nextarg), \ (posarg = nextarg++, GETNTHARG(posarg))) -#define GETPOSARG(n) (posarg > 0 ? \ - (rb_raise(rb_eArgError, "numbered(%d) after unnumbered(%d)", n, posarg), 0) : \ - ((n < 1) ? (rb_raise(rb_eArgError, "invalid index - %d$", n), 0) : \ - (posarg = -1, GETNTHARG(n)))) +#define GETPOSARG(n) ( \ + check_pos_arg(posarg, (n)), \ + (posarg = -1, GETNTHARG(n))) #define GETNTHARG(nth) \ - ((nth >= argc) ? (rb_raise(rb_eArgError, "too few arguments"), 0) : argv[nth]) + (((nth) >= argc) ? (rb_raise(rb_eArgError, "too few arguments"), 0) : argv[(nth)]) + +#define CHECKNAMEARG(name, len, enc) ( \ + check_name_arg(posarg, name, len, enc), \ + posarg = -2) #define GETNUM(n, val) \ - for (; p < end && ISDIGIT(*p); p++) { \ - int next_n = 10 * n + (*p - '0'); \ - if (next_n / 10 != n) {\ - rb_raise(rb_eArgError, #val " too big"); \ - } \ - n = next_n; \ - } \ - if (p >= end) { \ - rb_raise(rb_eArgError, "malformed format string - %%*[0-9]"); \ - } + (!(p = get_num(p, end, enc, &(n))) ? \ + rb_raise(rb_eArgError, #val " too big") : (void)0) #define GETASTER(val) do { \ t = p++; \ @@ -131,107 +116,325 @@ sign_bits(base, p) tmp = GETPOSARG(n); \ } \ else { \ - tmp = GETARG(); \ + tmp = GETNEXTARG(); \ p = t; \ } \ - val = NUM2INT(tmp); \ + (val) = NUM2INT(tmp); \ } while (0) +static const char * +get_num(const char *p, const char *end, rb_encoding *enc, int *valp) +{ + int next_n = *valp; + for (; p < end && rb_enc_isdigit(*p, enc); p++) { + if (MUL_OVERFLOW_INT_P(10, next_n)) + return NULL; + next_n *= 10; + if (INT_MAX - (*p - '0') < next_n) + return NULL; + next_n += *p - '0'; + } + if (p >= end) { + rb_raise(rb_eArgError, "malformed format string - %%*[0-9]"); + } + *valp = next_n; + return p; +} + +static void +check_next_arg(int posarg, int nextarg) +{ + switch (posarg) { + case -1: + rb_raise(rb_eArgError, "unnumbered(%d) mixed with numbered", nextarg); + case -2: + rb_raise(rb_eArgError, "unnumbered(%d) mixed with named", nextarg); + } +} + +static void +check_pos_arg(int posarg, int n) +{ + if (posarg > 0) { + rb_raise(rb_eArgError, "numbered(%d) after unnumbered(%d)", n, posarg); + } + if (posarg == -2) { + rb_raise(rb_eArgError, "numbered(%d) after named", n); + } + if (n < 1) { + rb_raise(rb_eArgError, "invalid index - %d$", n); + } +} + +static void +check_name_arg(int posarg, const char *name, int len, rb_encoding *enc) +{ + if (posarg > 0) { + rb_enc_raise(enc, rb_eArgError, "named%.*s after unnumbered(%d)", len, name, posarg); + } + if (posarg == -1) { + rb_enc_raise(enc, rb_eArgError, "named%.*s after numbered", len, name); + } +} + +static VALUE +get_hash(volatile VALUE *hash, int argc, const VALUE *argv) +{ + VALUE tmp; + + if (*hash != Qundef) return *hash; + if (argc != 2) { + rb_raise(rb_eArgError, "one hash required"); + } + tmp = rb_check_hash_type(argv[1]); + if (NIL_P(tmp)) { + rb_raise(rb_eArgError, "one hash required"); + } + return (*hash = tmp); +} /* * call-seq: - * format(format_string [, arguments...] ) => string - * sprintf(format_string [, arguments...] ) => string - * + * format(format_string [, arguments...] ) -> string + * sprintf(format_string [, arguments...] ) -> string + * * Returns the string resulting from applying <i>format_string</i> to - * any additional arguments. Within the format string, any characters - * other than format sequences are copied to the result. A format + * any additional arguments. Within the format string, any characters + * other than format sequences are copied to the result. + * + * The syntax of a format sequence is follows. + * + * %[flags][width][.precision]type + * + * A format * sequence consists of a percent sign, followed by optional flags, * width, and precision indicators, then terminated with a field type - * character. The field type controls how the corresponding + * character. The field type controls how the corresponding * <code>sprintf</code> argument is to be interpreted, while the flags - * modify that interpretation. The field type characters are listed - * in the table at the end of this section. The flag characters are: - * - * Flag | Applies to | Meaning - * ---------+--------------+----------------------------------------- - * space | bdeEfgGiouxX | Leave a space at the start of - * | | positive numbers. - * ---------+--------------+----------------------------------------- - * (digit)$ | all | Specifies the absolute argument number - * | | for this field. Absolute and relative - * | | argument numbers cannot be mixed in a - * | | sprintf string. - * ---------+--------------+----------------------------------------- - * # | beEfgGoxX | Use an alternative format. For the - * | | conversions `o', `x', `X', and `b', - * | | prefix the result with ``0'', ``0x'', ``0X'', - * | | and ``0b'', respectively. For `e', - * | | `E', `f', `g', and 'G', force a decimal - * | | point to be added, even if no digits follow. - * | | For `g' and 'G', do not remove trailing zeros. - * ---------+--------------+----------------------------------------- - * + | bdeEfgGiouxX | Add a leading plus sign to positive numbers. - * ---------+--------------+----------------------------------------- - * - | all | Left-justify the result of this conversion. - * ---------+--------------+----------------------------------------- - * 0 (zero) | bdeEfgGiouxX | Pad with zeros, not spaces. - * ---------+--------------+----------------------------------------- - * * | all | Use the next argument as the field width. - * | | If negative, left-justify the result. If the - * | | asterisk is followed by a number and a dollar - * | | sign, use the indicated argument as the width. - * - * - * The field width is an optional integer, followed optionally by a - * period and a precision. The width specifies the minimum number of - * characters that will be written to the result for this field. For - * numeric fields, the precision controls the number of decimal places - * displayed. For string fields, the precision determines the maximum - * number of characters to be copied from the string. (Thus, the format - * sequence <code>%10.10s</code> will always contribute exactly ten - * characters to the result.) + * modify that interpretation. * - * The field types are: + * The field type characters are: * - * Field | Conversion + * Field | Integer Format * ------+-------------------------------------------------------------- * b | Convert argument as a binary number. - * c | Argument is the numeric code for a single character. + * | Negative numbers will be displayed as a two's complement + * | prefixed with `..1'. + * B | Equivalent to `b', but uses an uppercase 0B for prefix + * | in the alternative format by #. * d | Convert argument as a decimal number. + * i | Identical to `d'. + * o | Convert argument as an octal number. + * | Negative numbers will be displayed as a two's complement + * | prefixed with `..7'. + * u | Identical to `d'. + * x | Convert argument as a hexadecimal number. + * | Negative numbers will be displayed as a two's complement + * | prefixed with `..f' (representing an infinite string of + * | leading 'ff's). + * X | Equivalent to `x', but uses uppercase letters. + * + * Field | Float Format + * ------+-------------------------------------------------------------- + * e | Convert floating point argument into exponential notation + * | with one digit before the decimal point as [-]d.dddddde[+-]dd. + * | The precision specifies the number of digits after the decimal + * | point (defaulting to six). * E | Equivalent to `e', but uses an uppercase E to indicate * | the exponent. - * e | Convert floating point argument into exponential notation - * | with one digit before the decimal point. The precision - * | determines the number of fractional digits (defaulting to six). - * f | Convert floating point argument as [-]ddd.ddd, - * | where the precision determines the number of digits after + * f | Convert floating point argument as [-]ddd.dddddd, + * | where the precision specifies the number of digits after * | the decimal point. - * G | Equivalent to `g', but use an uppercase `E' in exponent form. * g | Convert a floating point number using exponential form * | if the exponent is less than -4 or greater than or - * | equal to the precision, or in d.dddd form otherwise. - * i | Identical to `d'. - * o | Convert argument as an octal number. + * | equal to the precision, or in dd.dddd form otherwise. + * | The precision specifies the number of significant digits. + * G | Equivalent to `g', but use an uppercase `E' in exponent form. + * a | Convert floating point argument as [-]0xh.hhhhp[+-]dd, + * | which is consisted from optional sign, "0x", fraction part + * | as hexadecimal, "p", and exponential part as decimal. + * A | Equivalent to `a', but use uppercase `X' and `P'. + * + * Field | Other Format + * ------+-------------------------------------------------------------- + * c | Argument is the numeric code for a single character or + * | a single character string itself. * p | The valuing of argument.inspect. - * s | Argument is a string to be substituted. If the format + * s | Argument is a string to be substituted. If the format * | sequence contains a precision, at most that many characters * | will be copied. - * u | Treat argument as an unsigned decimal number. Negative integers - * | are displayed as a 32 bit two's complement plus one for the - * | underlying architecture; that is, 2 ** 32 + n. However, since - * | Ruby has no inherent limit on bits used to represent the - * | integer, this value is preceded by two dots (..) in order to - * | indicate a infinite number of leading sign bits. - * X | Convert argument as a hexadecimal number using uppercase - * | letters. Negative numbers will be displayed with two - * | leading periods (representing an infinite string of - * | leading 'FF's. - * x | Convert argument as a hexadecimal number. - * | Negative numbers will be displayed with two - * | leading periods (representing an infinite string of - * | leading 'ff's. - * + * % | A percent sign itself will be displayed. No argument taken. + * + * The flags modifies the behavior of the formats. + * The flag characters are: + * + * Flag | Applies to | Meaning + * ---------+---------------+----------------------------------------- + * space | bBdiouxX | Leave a space at the start of + * | aAeEfgG | non-negative numbers. + * | (numeric fmt) | For `o', `x', `X', `b' and `B', use + * | | a minus sign with absolute value for + * | | negative values. + * ---------+---------------+----------------------------------------- + * (digit)$ | all | Specifies the absolute argument number + * | | for this field. Absolute and relative + * | | argument numbers cannot be mixed in a + * | | sprintf string. + * ---------+---------------+----------------------------------------- + * # | bBoxX | Use an alternative format. + * | aAeEfgG | For the conversions `o', increase the precision + * | | until the first digit will be `0' if + * | | it is not formatted as complements. + * | | For the conversions `x', `X', `b' and `B' + * | | on non-zero, prefix the result with ``0x'', + * | | ``0X'', ``0b'' and ``0B'', respectively. + * | | For `a', `A', `e', `E', `f', `g', and 'G', + * | | force a decimal point to be added, + * | | even if no digits follow. + * | | For `g' and 'G', do not remove trailing zeros. + * ---------+---------------+----------------------------------------- + * + | bBdiouxX | Add a leading plus sign to non-negative + * | aAeEfgG | numbers. + * | (numeric fmt) | For `o', `x', `X', `b' and `B', use + * | | a minus sign with absolute value for + * | | negative values. + * ---------+---------------+----------------------------------------- + * - | all | Left-justify the result of this conversion. + * ---------+---------------+----------------------------------------- + * 0 (zero) | bBdiouxX | Pad with zeros, not spaces. + * | aAeEfgG | For `o', `x', `X', `b' and `B', radix-1 + * | (numeric fmt) | is used for negative numbers formatted as + * | | complements. + * ---------+---------------+----------------------------------------- + * * | all | Use the next argument as the field width. + * | | If negative, left-justify the result. If the + * | | asterisk is followed by a number and a dollar + * | | sign, use the indicated argument as the width. + * + * Examples of flags: + * + * # `+' and space flag specifies the sign of non-negative numbers. + * sprintf("%d", 123) #=> "123" + * sprintf("%+d", 123) #=> "+123" + * sprintf("% d", 123) #=> " 123" + * + * # `#' flag for `o' increases number of digits to show `0'. + * # `+' and space flag changes format of negative numbers. + * sprintf("%o", 123) #=> "173" + * sprintf("%#o", 123) #=> "0173" + * sprintf("%+o", -123) #=> "-173" + * sprintf("%o", -123) #=> "..7605" + * sprintf("%#o", -123) #=> "..7605" + * + * # `#' flag for `x' add a prefix `0x' for non-zero numbers. + * # `+' and space flag disables complements for negative numbers. + * sprintf("%x", 123) #=> "7b" + * sprintf("%#x", 123) #=> "0x7b" + * sprintf("%+x", -123) #=> "-7b" + * sprintf("%x", -123) #=> "..f85" + * sprintf("%#x", -123) #=> "0x..f85" + * sprintf("%#x", 0) #=> "0" + * + * # `#' for `X' uses the prefix `0X'. + * sprintf("%X", 123) #=> "7B" + * sprintf("%#X", 123) #=> "0X7B" + * + * # `#' flag for `b' add a prefix `0b' for non-zero numbers. + * # `+' and space flag disables complements for negative numbers. + * sprintf("%b", 123) #=> "1111011" + * sprintf("%#b", 123) #=> "0b1111011" + * sprintf("%+b", -123) #=> "-1111011" + * sprintf("%b", -123) #=> "..10000101" + * sprintf("%#b", -123) #=> "0b..10000101" + * sprintf("%#b", 0) #=> "0" + * + * # `#' for `B' uses the prefix `0B'. + * sprintf("%B", 123) #=> "1111011" + * sprintf("%#B", 123) #=> "0B1111011" + * + * # `#' for `e' forces to show the decimal point. + * sprintf("%.0e", 1) #=> "1e+00" + * sprintf("%#.0e", 1) #=> "1.e+00" + * + * # `#' for `f' forces to show the decimal point. + * sprintf("%.0f", 1234) #=> "1234" + * sprintf("%#.0f", 1234) #=> "1234." + * + * # `#' for `g' forces to show the decimal point. + * # It also disables stripping lowest zeros. + * sprintf("%g", 123.4) #=> "123.4" + * sprintf("%#g", 123.4) #=> "123.400" + * sprintf("%g", 123456) #=> "123456" + * sprintf("%#g", 123456) #=> "123456." + * + * The field width is an optional integer, followed optionally by a + * period and a precision. The width specifies the minimum number of + * characters that will be written to the result for this field. + * + * Examples of width: + * + * # padding is done by spaces, width=20 + * # 0 or radix-1. <------------------> + * sprintf("%20d", 123) #=> " 123" + * sprintf("%+20d", 123) #=> " +123" + * sprintf("%020d", 123) #=> "00000000000000000123" + * sprintf("%+020d", 123) #=> "+0000000000000000123" + * sprintf("% 020d", 123) #=> " 0000000000000000123" + * sprintf("%-20d", 123) #=> "123 " + * sprintf("%-+20d", 123) #=> "+123 " + * sprintf("%- 20d", 123) #=> " 123 " + * sprintf("%020x", -123) #=> "..ffffffffffffffff85" + * + * For + * numeric fields, the precision controls the number of decimal places + * displayed. For string fields, the precision determines the maximum + * number of characters to be copied from the string. (Thus, the format + * sequence <code>%10.10s</code> will always contribute exactly ten + * characters to the result.) + * + * Examples of precisions: + * + * # precision for `d', 'o', 'x' and 'b' is + * # minimum number of digits <------> + * sprintf("%20.8d", 123) #=> " 00000123" + * sprintf("%20.8o", 123) #=> " 00000173" + * sprintf("%20.8x", 123) #=> " 0000007b" + * sprintf("%20.8b", 123) #=> " 01111011" + * sprintf("%20.8d", -123) #=> " -00000123" + * sprintf("%20.8o", -123) #=> " ..777605" + * sprintf("%20.8x", -123) #=> " ..ffff85" + * sprintf("%20.8b", -11) #=> " ..110101" + * + * # "0x" and "0b" for `#x' and `#b' is not counted for + * # precision but "0" for `#o' is counted. <------> + * sprintf("%#20.8d", 123) #=> " 00000123" + * sprintf("%#20.8o", 123) #=> " 00000173" + * sprintf("%#20.8x", 123) #=> " 0x0000007b" + * sprintf("%#20.8b", 123) #=> " 0b01111011" + * sprintf("%#20.8d", -123) #=> " -00000123" + * sprintf("%#20.8o", -123) #=> " ..777605" + * sprintf("%#20.8x", -123) #=> " 0x..ffff85" + * sprintf("%#20.8b", -11) #=> " 0b..110101" + * + * # precision for `e' is number of + * # digits after the decimal point <------> + * sprintf("%20.8e", 1234.56789) #=> " 1.23456789e+03" + * + * # precision for `f' is number of + * # digits after the decimal point <------> + * sprintf("%20.8f", 1234.56789) #=> " 1234.56789000" + * + * # precision for `g' is number of + * # significant digits <-------> + * sprintf("%20.8g", 1234.56789) #=> " 1234.5679" + * + * # <-------> + * sprintf("%20.8g", 123456789) #=> " 1.2345679e+08" + * + * # precision for `s' is + * # maximum number of characters <------> + * sprintf("%20.8s", "string test") #=> " string t" + * * Examples: * * sprintf("%d %04x", 123, 123) #=> "123 007b" @@ -239,35 +442,45 @@ sign_bits(base, p) * sprintf("%1$*2$s %2$d %1$s", "hello", 8) #=> " hello 8 hello" * sprintf("%1$*2$s %2$d", "hello", -8) #=> "hello -8" * sprintf("%+g:% g:%-g", 1.23, 1.23, 1.23) #=> "+1.23: 1.23:1.23" - * sprintf("%u", -123) #=> "..4294967173" + * sprintf("%u", -123) #=> "-123" + * + * For more complex formatting, Ruby supports a reference by name. + * %<name>s style uses format style, but %{name} style doesn't. + * + * Examples: + * sprintf("%<foo>d : %<bar>f", { :foo => 1, :bar => 2 }) + * #=> 1 : 2.000000 + * sprintf("%{foo}f", { :foo => 1 }) + * # => "1f" */ VALUE -rb_f_sprintf(argc, argv) - int argc; - VALUE *argv; +rb_f_sprintf(int argc, const VALUE *argv) { return rb_str_format(argc - 1, argv + 1, GETNTHARG(0)); } VALUE -rb_str_format(argc, argv, fmt) - int argc; - VALUE *argv; - VALUE fmt; +rb_str_format(int argc, const VALUE *argv, VALUE fmt) { + enum {default_float_precision = 6}; + rb_encoding *enc; const char *p, *end; char *buf; - int blen, bsiz; + long blen, bsiz; VALUE result; + long scanned = 0; + int coderange = ENC_CODERANGE_7BIT; int width, prec, flags = FNONE; int nextarg = 1; int posarg = 0; int tainted = 0; VALUE nextvalue; VALUE tmp; + VALUE orig; VALUE str; + volatile VALUE hash = Qundef; #define CHECK_FOR_WIDTH(f) \ if ((f) & FWIDTH) { \ @@ -288,20 +501,33 @@ rb_str_format(argc, argv, fmt) --argv; if (OBJ_TAINTED(fmt)) tainted = 1; StringValue(fmt); - fmt = rb_str_new4(fmt); - p = RSTRING(fmt)->ptr; - end = p + RSTRING(fmt)->len; + enc = rb_enc_get(fmt); + orig = fmt; + fmt = rb_str_tmp_frozen_acquire(fmt); + p = RSTRING_PTR(fmt); + end = p + RSTRING_LEN(fmt); blen = 0; bsiz = 120; result = rb_str_buf_new(bsiz); - buf = RSTRING(result)->ptr; + rb_enc_copy(result, fmt); + buf = RSTRING_PTR(result); + memset(buf, 0, bsiz); + ENC_CODERANGE_SET(result, coderange); for (; p < end; p++) { const char *t; int n; + VALUE sym = Qnil; for (t = p; t < end && *t != '%'; t++) ; + if (t + 1 == end) { + rb_raise(rb_eArgError, "incomplete format specifier; use %%%% (double %%) instead"); + } PUSH(p, t - p); + if (coderange != ENC_CODERANGE_BROKEN && scanned < blen) { + scanned += rb_str_coderange_scan_restartable(buf+scanned, buf+blen, enc, &coderange); + ENC_CODERANGE_SET(result, coderange); + } if (t >= end) { /* end of fmt string */ goto sprint_exit; @@ -313,7 +539,7 @@ rb_str_format(argc, argv, fmt) retry: switch (*p) { default: - if (ISPRINT(*p)) + if (rb_enc_isprint(*p, enc)) rb_raise(rb_eArgError, "malformed format string - %%%c", *p); else rb_raise(rb_eArgError, "malformed format string"); @@ -366,6 +592,55 @@ rb_str_format(argc, argv, fmt) flags |= FWIDTH; goto retry; + case '<': + case '{': + { + const char *start = p; + char term = (*p == '<') ? '>' : '}'; + int len; + + for (; p < end && *p != term; ) { + p += rb_enc_mbclen(p, end, enc); + } + if (p >= end) { + rb_raise(rb_eArgError, "malformed name - unmatched parenthesis"); + } +#if SIZEOF_INT < SIZEOF_SIZE_T + if ((size_t)(p - start) >= INT_MAX) { + const int message_limit = 20; + len = (int)(rb_enc_right_char_head(start, start + message_limit, p, enc) - start); + rb_enc_raise(enc, rb_eArgError, + "too long name (%"PRIuSIZE" bytes) - %.*s...%c", + (size_t)(p - start - 2), len, start, term); + } +#endif + len = (int)(p - start + 1); /* including parenthesis */ + if (sym != Qnil) { + rb_enc_raise(enc, rb_eArgError, "named%.*s after <%"PRIsVALUE">", + len, start, rb_sym2str(sym)); + } + CHECKNAMEARG(start, len, enc); + get_hash(&hash, argc, argv); + sym = rb_check_symbol_cstr(start + 1, + len - 2 /* without parenthesis */, + enc); + if (!NIL_P(sym)) nextvalue = rb_hash_lookup2(hash, sym, Qundef); + if (nextvalue == Qundef) { + if (NIL_P(sym)) { + sym = rb_sym_intern(start + 1, + len - 2 /* without parenthesis */, + enc); + } + nextvalue = rb_hash_default_value(hash, sym); + if (NIL_P(nextvalue)) { + rb_key_err_raise(rb_enc_sprintf(enc, "key%.*s not found", len, start), hash, sym); + } + } + if (term == '}') goto format_s; + p++; + goto retry; + } + case '*': CHECK_FOR_WIDTH(flags); flags |= FWIDTH; @@ -373,6 +648,7 @@ rb_str_format(argc, argv, fmt) if (width < 0) { flags |= FMINUS; width = -width; + if (width < 0) rb_raise(rb_eArgError, "width too big"); } p++; goto retry; @@ -402,7 +678,7 @@ rb_str_format(argc, argv, fmt) p--; case '%': if (flags != FNONE) { - rb_raise(rb_eArgError, "illegal format character - %%"); + rb_raise(rb_eArgError, "invalid format character - %%"); } PUSH("%", 1); break; @@ -410,70 +686,101 @@ rb_str_format(argc, argv, fmt) case 'c': { VALUE val = GETARG(); - char c; - - if (!(flags & FMINUS)) - while (--width > 0) - PUSH(" ", 1); - c = NUM2INT(val) & 0xff; - PUSH(&c, 1); - while (--width > 0) - PUSH(" ", 1); + VALUE tmp; + unsigned int c; + int n; + + tmp = rb_check_string_type(val); + if (!NIL_P(tmp)) { + if (rb_enc_strlen(RSTRING_PTR(tmp),RSTRING_END(tmp),enc) != 1) { + rb_raise(rb_eArgError, "%%c requires a character"); + } + c = rb_enc_codepoint_len(RSTRING_PTR(tmp), RSTRING_END(tmp), &n, enc); + RB_GC_GUARD(tmp); + } + else { + c = NUM2INT(val); + n = rb_enc_codelen(c, enc); + } + if (n <= 0) { + rb_raise(rb_eArgError, "invalid character"); + } + if (!(flags & FWIDTH)) { + CHECK(n); + rb_enc_mbcput(c, &buf[blen], enc); + blen += n; + } + else if ((flags & FMINUS)) { + CHECK(n); + rb_enc_mbcput(c, &buf[blen], enc); + blen += n; + if (width > 1) FILL(' ', width-1); + } + else { + if (width > 1) FILL(' ', width-1); + CHECK(n); + rb_enc_mbcput(c, &buf[blen], enc); + blen += n; + } } break; case 's': case 'p': + format_s: { VALUE arg = GETARG(); - long len; + long len, slen; - if (*p == 'p') arg = rb_inspect(arg); - str = rb_obj_as_string(arg); - if (OBJ_TAINTED(str)) tainted = 1; - len = RSTRING(str)->len; - if (flags&FPREC) { - if (prec < len) { - len = prec; - } + if (*p == 'p') { + str = rb_inspect(arg); } - { - char *s, *send; - long l; - - s = RSTRING(str)->ptr; - send = s + RSTRING(str)->len; - l = 0; - while (s < send) { - long n = mbclen(*s); - if (l + n > len) { - len = l; - break; - } - l += n; - s += n; - } + else { + str = rb_obj_as_string(arg); } - if (flags&FWIDTH) { - if (width > len) { - CHECK(width); - width -= len; + if (OBJ_TAINTED(str)) tainted = 1; + len = RSTRING_LEN(str); + rb_str_set_len(result, blen); + if (coderange != ENC_CODERANGE_BROKEN && scanned < blen) { + int cr = coderange; + scanned += rb_str_coderange_scan_restartable(buf+scanned, buf+blen, enc, &cr); + ENC_CODERANGE_SET(result, + (cr == ENC_CODERANGE_UNKNOWN ? + ENC_CODERANGE_BROKEN : (coderange = cr))); + } + enc = rb_enc_check(result, str); + if (flags&(FPREC|FWIDTH)) { + slen = rb_enc_strlen(RSTRING_PTR(str),RSTRING_END(str),enc); + if (slen < 0) { + rb_raise(rb_eArgError, "invalid mbstring sequence"); + } + if ((flags&FPREC) && (prec < slen)) { + char *p = rb_enc_nth(RSTRING_PTR(str), RSTRING_END(str), + prec, enc); + slen = prec; + len = p - RSTRING_PTR(str); + } + /* need to adjust multi-byte string pos */ + if ((flags&FWIDTH) && (width > slen)) { + width -= (int)slen; if (!(flags&FMINUS)) { - while (width--) { - buf[blen++] = ' '; - } + FILL(' ', width); + width = 0; } - memcpy(&buf[blen], RSTRING(str)->ptr, len); + CHECK(len); + memcpy(&buf[blen], RSTRING_PTR(str), len); + RB_GC_GUARD(str); blen += len; if (flags&FMINUS) { - while (width--) { - buf[blen++] = ' '; - } + FILL(' ', width); } + rb_enc_associate(result, enc); break; } } - PUSH(RSTRING(str)->ptr, len); + PUSH(RSTRING_PTR(str), len); + RB_GC_GUARD(str); + rb_enc_associate(result, enc); } break; @@ -487,27 +794,25 @@ rb_str_format(argc, argv, fmt) case 'u': { volatile VALUE val = GETARG(); - char fbuf[32], nbuf[64], *s, *t; + int valsign; + char nbuf[BIT_DIGITS(SIZEOF_LONG*CHAR_BIT)+2], *s; const char *prefix = 0; - int sign = 0; + int sign = 0, dots = 0; char sc = 0; long v = 0; int base, bignum = 0; - int len, pos; - volatile VALUE tmp; - volatile VALUE tmp1; + int len; switch (*p) { case 'd': case 'i': + case 'u': sign = 1; break; case 'o': case 'x': case 'X': case 'b': case 'B': - case 'u': - default: if (flags&(FPLUS|FSPACE)) sign = 1; break; } @@ -524,20 +829,21 @@ rb_str_format(argc, argv, fmt) case 'B': prefix = "0B"; break; } - if (prefix) { - width -= strlen(prefix); - } } bin_retry: switch (TYPE(val)) { case T_FLOAT: - val = rb_dbl2big(RFLOAT(val)->value); + if (FIXABLE(RFLOAT_VALUE(val))) { + val = LONG2FIX((long)RFLOAT_VALUE(val)); + goto bin_retry; + } + val = rb_dbl2big(RFLOAT_VALUE(val)); if (FIXNUM_P(val)) goto bin_retry; bignum = 1; break; case T_STRING: - val = rb_str_to_inum(val, 0, Qtrue); + val = rb_str_to_inum(val, 0, TRUE); goto bin_retry; case T_BIGNUM: bignum = 1; @@ -566,254 +872,307 @@ rb_str_format(argc, argv, fmt) base = 10; break; } - if (!bignum) { - if (base == 2) { - val = rb_int2big(v); - goto bin_retry; - } - if (sign) { - char c = *p; - if (c == 'i') c = 'd'; /* %d and %i are identical */ - if (v < 0) { - v = -v; - sc = '-'; - width--; - } - else if (flags & FPLUS) { - sc = '+'; - width--; - } - else if (flags & FSPACE) { - sc = ' '; - width--; - } - sprintf(fbuf, "%%l%c", c); - sprintf(nbuf, fbuf, v); - s = nbuf; - goto format_integer; - } - s = nbuf; - if (v < 0) { - if (base == 10) { - rb_warning("negative number for %%u specifier"); - } - if (!(flags&(FPREC|FZERO))) { - strcpy(s, ".."); - s += 2; - } - } - sprintf(fbuf, "%%l%c", *p == 'X' ? 'x' : *p); - sprintf(s, fbuf, v); - if (v < 0) { - char d = 0; - - remove_sign_bits(s, base); - switch (base) { - case 16: - d = 'f'; break; - case 8: - d = '7'; break; - } - if (d && *s != d) { - memmove(s+1, s, strlen(s)+1); - *s = d; - } - } - s = nbuf; - goto format_integer; - } - - if (sign) { - tmp = rb_big2str(val, base); - s = RSTRING(tmp)->ptr; - if (s[0] == '-') { - s++; - sc = '-'; + if (base != 10) { + int numbits = ffs(base)-1; + size_t abs_nlz_bits; + size_t numdigits = rb_absint_numwords(val, numbits, &abs_nlz_bits); + long i; + if (INT_MAX-1 < numdigits) /* INT_MAX is used because rb_long2int is used later. */ + rb_raise(rb_eArgError, "size too big"); + if (sign) { + if (numdigits == 0) + numdigits = 1; + tmp = rb_str_new(NULL, numdigits); + valsign = rb_integer_pack(val, RSTRING_PTR(tmp), RSTRING_LEN(tmp), + 1, CHAR_BIT-numbits, INTEGER_PACK_BIG_ENDIAN); + for (i = 0; i < RSTRING_LEN(tmp); i++) + RSTRING_PTR(tmp)[i] = ruby_digitmap[((unsigned char *)RSTRING_PTR(tmp))[i]]; + s = RSTRING_PTR(tmp); + if (valsign < 0) { + sc = '-'; + width--; + } + else if (flags & FPLUS) { + sc = '+'; + width--; + } + else if (flags & FSPACE) { + sc = ' '; + width--; + } + } + else { + /* Following conditional "numdigits++" guarantees the + * most significant digit as + * - '1'(bin), '7'(oct) or 'f'(hex) for negative numbers + * - '0' for zero + * - not '0' for positive numbers. + * + * It also guarantees the most significant two + * digits will not be '11'(bin), '77'(oct), 'ff'(hex) + * or '00'. */ + if (numdigits == 0 || + ((abs_nlz_bits != (size_t)(numbits-1) || + !rb_absint_singlebit_p(val)) && + (!bignum ? v < 0 : BIGNUM_NEGATIVE_P(val)))) + numdigits++; + tmp = rb_str_new(NULL, numdigits); + valsign = rb_integer_pack(val, RSTRING_PTR(tmp), RSTRING_LEN(tmp), + 1, CHAR_BIT-numbits, INTEGER_PACK_2COMP | INTEGER_PACK_BIG_ENDIAN); + for (i = 0; i < RSTRING_LEN(tmp); i++) + RSTRING_PTR(tmp)[i] = ruby_digitmap[((unsigned char *)RSTRING_PTR(tmp))[i]]; + s = RSTRING_PTR(tmp); + dots = valsign < 0; + } + len = rb_long2int(RSTRING_END(tmp) - s); + } + else if (!bignum) { + valsign = 1; + if (v < 0) { + v = -v; + sc = '-'; width--; - } - else if (flags & FPLUS) { - sc = '+'; + valsign = -1; + } + else if (flags & FPLUS) { + sc = '+'; width--; - } - else if (flags & FSPACE) { - sc = ' '; + } + else if (flags & FSPACE) { + sc = ' '; width--; - } - goto format_integer; - } - if (!RBIGNUM(val)->sign) { - val = rb_big_clone(val); - rb_big_2comp(val); + } + s = ruby_ultoa((unsigned long)v, nbuf + sizeof(nbuf), 10, 0); + len = (int)(nbuf + sizeof(nbuf) - s); } - tmp1 = tmp = rb_big2str(val, base); - s = RSTRING(tmp)->ptr; - if (*s == '-') { - if (base == 10) { - rb_warning("negative number for %%u specifier"); - } - remove_sign_bits(++s, base); - tmp = rb_str_new(0, 3+strlen(s)); - t = RSTRING(tmp)->ptr; - if (!(flags&(FPREC|FZERO))) { - strcpy(t, ".."); - t += 2; - } - switch (base) { - case 16: - if (s[0] != 'f') strcpy(t++, "f"); break; - case 8: - if (s[0] != '7') strcpy(t++, "7"); break; - case 2: - if (s[0] != '1') strcpy(t++, "1"); break; - } - strcpy(t, s); - bignum = 2; + else { + tmp = rb_big2str(val, 10); + s = RSTRING_PTR(tmp); + valsign = 1; + if (s[0] == '-') { + s++; + sc = '-'; + width--; + valsign = -1; + } + else if (flags & FPLUS) { + sc = '+'; + width--; + } + else if (flags & FSPACE) { + sc = ' '; + width--; + } + len = rb_long2int(RSTRING_END(tmp) - s); } - s = RSTRING(tmp)->ptr; - format_integer: - pos = -1; - len = strlen(s); + if (dots) { + prec -= 2; + width -= 2; + } if (*p == 'X') { char *pp = s; - while (*pp) { - *pp = toupper(*pp); + int c; + while ((c = (int)(unsigned char)*pp) != 0) { + *pp = rb_enc_toupper(c, enc); pp++; } } - if ((flags&(FZERO|FPREC)) == FZERO) { + if (prefix && !prefix[1]) { /* octal */ + if (dots) { + prefix = 0; + } + else if (len == 1 && *s == '0') { + len = 0; + if (flags & FPREC) prec--; + } + else if ((flags & FPREC) && (prec > len)) { + prefix = 0; + } + } + else if (len == 1 && *s == '0') { + prefix = 0; + } + if (prefix) { + width -= (int)strlen(prefix); + } + if ((flags & (FZERO|FMINUS|FPREC)) == FZERO) { prec = width; width = 0; } else { - if (prec < len) prec = len; + if (prec < len) { + if (!prefix && prec == 0 && len == 1 && *s == '0') len = 0; + prec = len; + } width -= prec; } if (!(flags&FMINUS)) { - CHECK(width); - while (width-- > 0) { - buf[blen++] = ' '; - } + FILL(' ', width); + width = 0; } if (sc) PUSH(&sc, 1); if (prefix) { - int plen = strlen(prefix); + int plen = (int)strlen(prefix); PUSH(prefix, plen); } - CHECK(prec - len); - if (!bignum && v < 0) { - char c = sign_bits(base, p); - while (len < prec--) { - buf[blen++] = c; + if (dots) PUSH("..", 2); + if (prec > len) { + CHECK(prec - len); + if (!sign && valsign < 0) { + char c = sign_bits(base, p); + FILL_(c, prec - len); } - } - else { - char c; - - if (!sign && bignum && !RBIGNUM(val)->sign) - c = sign_bits(base, p); - else - c = '0'; - while (len < prec--) { - buf[blen++] = c; + else if ((flags & (FMINUS|FPREC)) != FMINUS) { + FILL_('0', prec - len); } } PUSH(s, len); - CHECK(width); - while (width-- > 0) { - buf[blen++] = ' '; - } + RB_GC_GUARD(tmp); + FILL(' ', width); } break; case 'f': + { + VALUE val = GETARG(), num, den; + int sign = (flags&FPLUS) ? 1 : 0, zero = 0; + long len, fill; + if (RB_INTEGER_TYPE_P(val)) { + den = INT2FIX(1); + num = val; + } + else if (RB_TYPE_P(val, T_RATIONAL)) { + den = rb_rational_den(val); + num = rb_rational_num(val); + } + else { + nextvalue = val; + goto float_value; + } + if (!(flags&FPREC)) prec = default_float_precision; + if (FIXNUM_P(num)) { + if ((SIGNED_VALUE)num < 0) { + long n = -FIX2LONG(num); + num = LONG2FIX(n); + sign = -1; + } + } + else if (BIGNUM_NEGATIVE_P(num)) { + sign = -1; + num = rb_big_uminus(num); + } + if (den != INT2FIX(1)) { + num = rb_int_mul(num, rb_int_positive_pow(10, prec)); + num = rb_int_plus(num, rb_int_idiv(den, INT2FIX(2))); + num = rb_int_idiv(num, den); + } + else if (prec >= 0) { + zero = prec; + } + val = rb_int2str(num, 10); + len = RSTRING_LEN(val) + zero; + if (prec >= len) len = prec + 1; /* integer part 0 */ + if (sign || (flags&FSPACE)) ++len; + if (prec > 0) ++len; /* period */ + fill = width > len ? width - len : 0; + CHECK(fill + len); + if (fill && !(flags&(FMINUS|FZERO))) { + FILL_(' ', fill); + } + if (sign || (flags&FSPACE)) { + buf[blen++] = sign > 0 ? '+' : sign < 0 ? '-' : ' '; + } + if (fill && (flags&(FMINUS|FZERO)) == FZERO) { + FILL_('0', fill); + } + len = RSTRING_LEN(val) + zero; + t = RSTRING_PTR(val); + if (len > prec) { + PUSH_(t, len - prec); + } + else { + buf[blen++] = '0'; + } + if (prec > 0) { + buf[blen++] = '.'; + } + if (zero) { + FILL_('0', zero); + } + else if (prec > len) { + FILL_('0', prec - len); + PUSH_(t, len); + } + else if (prec > 0) { + PUSH_(t + len - prec, prec); + } + if (fill && (flags&FMINUS)) { + FILL_(' ', fill); + } + RB_GC_GUARD(val); + break; + } case 'g': case 'G': case 'e': case 'E': + /* TODO: rational support */ + case 'a': + case 'A': + float_value: { VALUE val = GETARG(); double fval; - int i, need = 6; - char fbuf[32]; - fval = RFLOAT(rb_Float(val))->value; -#if defined(_WIN32) && !defined(__BORLANDC__) + fval = RFLOAT_VALUE(rb_Float(val)); if (isnan(fval) || isinf(fval)) { - char *expr; + const char *expr; + int need; + int elen; + char sign = '\0'; - if (isnan(fval)) { + if (isnan(fval)) { expr = "NaN"; } else { expr = "Inf"; } - need = strlen(expr); - if ((!isnan(fval) && fval < 0.0) || (flags & FPLUS)) - need++; - else if (flags & FSPACE) - need++; + need = (int)strlen(expr); + elen = need; + if (!isnan(fval) && fval < 0.0) + sign = '-'; + else if (flags & (FPLUS|FSPACE)) + sign = (flags & FPLUS) ? '+' : ' '; + if (sign) + ++need; if ((flags & FWIDTH) && need < width) need = width; - CHECK(need); - sprintf(&buf[blen], "%*s", need, ""); + FILL(' ', need); if (flags & FMINUS) { - if (!isnan(fval) && fval < 0.0) - buf[blen++] = '-'; - else if (flags & FPLUS) - buf[blen++] = '+'; - else if (flags & FSPACE) - blen++; - strncpy(&buf[blen], expr, strlen(expr)); - } - else if (flags & FZERO) { - if (!isnan(fval) && fval < 0.0) { - buf[blen++] = '-'; - need--; - } - else if (flags & FPLUS) { - buf[blen++] = '+'; - need--; - } - else if (flags & FSPACE) { - blen++; - need--; - } - while (need-- - strlen(expr) > 0) { - buf[blen++] = '0'; - } - strncpy(&buf[blen], expr, strlen(expr)); + if (sign) + buf[blen - need--] = sign; + memcpy(&buf[blen - need], expr, elen); } else { - if (!isnan(fval) && fval < 0.0) - buf[blen + need - strlen(expr) - 1] = '-'; - else if (flags & FPLUS) - buf[blen + need - strlen(expr) - 1] = '+'; - strncpy(&buf[blen + need - strlen(expr)], expr, - strlen(expr)); + if (sign) + buf[blen - elen - 1] = sign; + memcpy(&buf[blen - elen], expr, elen); } - blen += strlen(&buf[blen]); break; } -#endif /* defined(_WIN32) && !defined(__BORLANDC__) */ - fmt_setup(fbuf, *p, flags, width, prec); - need = 0; - if (*p != 'e' && *p != 'E') { - i = INT_MIN; - frexp(fval, &i); - if (i > 0) - need = BIT_DIGITS(i); - } - need += (flags&FPREC) ? prec : 6; - if ((flags&FWIDTH) && need < width) - need = width; - need += 20; - - CHECK(need); - sprintf(&buf[blen], fbuf, fval); - blen += strlen(&buf[blen]); + else { + int cr = ENC_CODERANGE(result); + char fbuf[2*BIT_DIGITS(SIZEOF_INT*CHAR_BIT)+10]; + char *fmt = fmt_setup(fbuf, sizeof(fbuf), *p, flags, width, prec); + rb_str_set_len(result, blen); + rb_str_catf(result, fmt, fval); + ENC_CODERANGE_SET(result, cr); + bsiz = rb_str_capacity(result); + RSTRING_GETMEM(result, buf, blen); + } } break; } @@ -821,12 +1180,13 @@ rb_str_format(argc, argv, fmt) } sprint_exit: - /* XXX - We cannot validiate the number of arguments if (digit)$ style used. + rb_str_tmp_frozen_release(orig, fmt); + /* XXX - We cannot validate the number of arguments if (digit)$ style used. */ if (posarg >= 0 && nextarg < argc) { const char *mesg = "too many arguments for format string"; - if (RTEST(ruby_debug)) rb_raise(rb_eArgError, mesg); - if (RTEST(ruby_verbose)) rb_warn(mesg); + if (RTEST(ruby_debug)) rb_raise(rb_eArgError, "%s", mesg); + if (RTEST(ruby_verbose)) rb_warn("%s", mesg); } rb_str_resize(result, blen); @@ -834,29 +1194,308 @@ rb_str_format(argc, argv, fmt) return result; } -static void -fmt_setup(buf, c, flags, width, prec) - char *buf; - int c; - int flags, width, prec; +static char * +fmt_setup(char *buf, size_t size, int c, int flags, int width, int prec) { - *buf++ = '%'; - if (flags & FSHARP) *buf++ = '#'; - if (flags & FPLUS) *buf++ = '+'; - if (flags & FMINUS) *buf++ = '-'; - if (flags & FZERO) *buf++ = '0'; - if (flags & FSPACE) *buf++ = ' '; + buf += size; + *--buf = '\0'; + *--buf = c; + + if (flags & FPREC) { + buf = ruby_ultoa(prec, buf, 10, 0); + *--buf = '.'; + } if (flags & FWIDTH) { - sprintf(buf, "%d", width); - buf += strlen(buf); + buf = ruby_ultoa(width, buf, 10, 0); } - if (flags & FPREC) { - sprintf(buf, ".%d", prec); - buf += strlen(buf); + if (flags & FSPACE) *--buf = ' '; + if (flags & FZERO) *--buf = '0'; + if (flags & FMINUS) *--buf = '-'; + if (flags & FPLUS) *--buf = '+'; + if (flags & FSHARP) *--buf = '#'; + *--buf = '%'; + return buf; +} + +#undef FILE +#define FILE rb_printf_buffer +#define __sbuf rb_printf_sbuf +#define __sFILE rb_printf_sfile +#undef feof +#undef ferror +#undef clearerr +#undef fileno +#if SIZEOF_LONG < SIZEOF_VOIDP +# if SIZEOF_LONG_LONG == SIZEOF_VOIDP +# define _HAVE_SANE_QUAD_ +# define _HAVE_LLP64_ +# define quad_t LONG_LONG +# define u_quad_t unsigned LONG_LONG +# endif +#elif SIZEOF_LONG != SIZEOF_LONG_LONG && SIZEOF_LONG_LONG == 8 +# define _HAVE_SANE_QUAD_ +# define quad_t LONG_LONG +# define u_quad_t unsigned LONG_LONG +#endif +#define FLOATING_POINT 1 +#define BSD__dtoa ruby_dtoa +#define BSD__hdtoa ruby_hdtoa +#ifdef RUBY_PRI_VALUE_MARK +# define PRI_EXTRA_MARK RUBY_PRI_VALUE_MARK +#endif +#define lower_hexdigits (ruby_hexdigits+0) +#define upper_hexdigits (ruby_hexdigits+16) +#if defined RUBY_USE_SETJMPEX && RUBY_USE_SETJMPEX +# undef MAYBE_UNUSED +# define MAYBE_UNUSED(x) x = 0 +#endif +#include "vsnprintf.c" + +static char * +ruby_ultoa(unsigned long val, char *endp, int base, int flags) +{ + const char *xdigs = lower_hexdigits; + int octzero = flags & FSHARP; + return BSD__ultoa(val, endp, base, octzero, xdigs); +} + +static int ruby_do_vsnprintf(char *str, size_t n, const char *fmt, va_list ap); + +int +ruby_vsnprintf(char *str, size_t n, const char *fmt, va_list ap) +{ + if (str && (ssize_t)n < 1) + return (EOF); + return ruby_do_vsnprintf(str, n, fmt, ap); +} + +static int +ruby_do_vsnprintf(char *str, size_t n, const char *fmt, va_list ap) +{ + int ret; + rb_printf_buffer f; + + f._flags = __SWR | __SSTR; + f._bf._base = f._p = (unsigned char *)str; + f._bf._size = f._w = str ? (n - 1) : 0; + f.vwrite = BSD__sfvwrite; + f.vextra = 0; + ret = (int)BSD_vfprintf(&f, fmt, ap); + if (str) *f._p = 0; + return ret; +} + +int +ruby_snprintf(char *str, size_t n, char const *fmt, ...) +{ + int ret; + va_list ap; + + if (str && (ssize_t)n < 1) + return (EOF); + + va_start(ap, fmt); + ret = ruby_do_vsnprintf(str, n, fmt, ap); + va_end(ap); + return ret; +} + +typedef struct { + rb_printf_buffer base; + volatile VALUE value; +} rb_printf_buffer_extra; + +static int +ruby__sfvwrite(register rb_printf_buffer *fp, register struct __suio *uio) +{ + struct __siov *iov; + VALUE result = (VALUE)fp->_bf._base; + char *buf = (char*)fp->_p; + long len, n; + long blen = buf - RSTRING_PTR(result), bsiz = fp->_w; + + if (RBASIC(result)->klass) { + rb_raise(rb_eRuntimeError, "rb_vsprintf reentered"); + } + if (uio->uio_resid == 0) + return 0; +#if SIZE_MAX > LONG_MAX + if (uio->uio_resid >= LONG_MAX) + rb_raise(rb_eRuntimeError, "too big string"); +#endif + len = (long)uio->uio_resid; + CHECK(len); + buf += blen; + fp->_w = bsiz; + for (iov = uio->uio_iov; len > 0; ++iov) { + MEMCPY(buf, iov->iov_base, char, n = iov->iov_len); + buf += n; + len -= n; + } + fp->_p = (unsigned char *)buf; + rb_str_set_len(result, buf - RSTRING_PTR(result)); + return 0; +} + +static const char * +ruby__sfvextra(rb_printf_buffer *fp, size_t valsize, void *valp, long *sz, int sign) +{ + VALUE value, result = (VALUE)fp->_bf._base; + rb_encoding *enc; + char *cp; + + if (valsize != sizeof(VALUE)) return 0; + value = *(VALUE *)valp; + if (RBASIC(result)->klass) { + rb_raise(rb_eRuntimeError, "rb_vsprintf reentered"); + } + if (sign == '+') { + if (RB_TYPE_P(value, T_CLASS)) { +# define LITERAL(str) (*sz = rb_strlen_lit(str), str) + + if (value == rb_cNilClass) { + return LITERAL("nil"); + } + else if (value == rb_cInteger) { + return LITERAL("Integer"); + } + else if (value == rb_cSymbol) { + return LITERAL("Symbol"); + } + else if (value == rb_cTrueClass) { + return LITERAL("true"); + } + else if (value == rb_cFalseClass) { + return LITERAL("false"); + } +# undef LITERAL + } + value = rb_inspect(value); + } + else { + value = rb_obj_as_string(value); + if (sign == ' ') value = QUOTE(value); + } + enc = rb_enc_compatible(result, value); + if (enc) { + rb_enc_associate(result, enc); + } + else { + enc = rb_enc_get(result); + value = rb_str_conv_enc_opts(value, rb_enc_get(value), enc, + ECONV_UNDEF_REPLACE|ECONV_INVALID_REPLACE, + Qnil); + *(volatile VALUE *)valp = value; + } + StringValueCStr(value); + RSTRING_GETMEM(value, cp, *sz); + ((rb_printf_buffer_extra *)fp)->value = value; + OBJ_INFECT(result, value); + return cp; +} + +VALUE +rb_enc_vsprintf(rb_encoding *enc, const char *fmt, va_list ap) +{ + rb_printf_buffer_extra buffer; +#define f buffer.base + VALUE result; + + f._flags = __SWR | __SSTR; + f._bf._size = 0; + f._w = 120; + result = rb_str_buf_new(f._w); + if (enc) { + if (rb_enc_mbminlen(enc) > 1) { + /* the implementation deeply depends on plain char */ + rb_raise(rb_eArgError, "cannot construct wchar_t based encoding string: %s", + rb_enc_name(enc)); + } + rb_enc_associate(result, enc); } + f._bf._base = (unsigned char *)result; + f._p = (unsigned char *)RSTRING_PTR(result); + RBASIC_CLEAR_CLASS(result); + f.vwrite = ruby__sfvwrite; + f.vextra = ruby__sfvextra; + buffer.value = 0; + BSD_vfprintf(&f, fmt, ap); + RBASIC_SET_CLASS_RAW(result, rb_cString); + rb_str_resize(result, (char *)f._p - RSTRING_PTR(result)); +#undef f + + return result; +} + +VALUE +rb_enc_sprintf(rb_encoding *enc, const char *format, ...) +{ + VALUE result; + va_list ap; - *buf++ = c; - *buf = '\0'; + va_start(ap, format); + result = rb_enc_vsprintf(enc, format, ap); + va_end(ap); + + return result; +} + +VALUE +rb_vsprintf(const char *fmt, va_list ap) +{ + return rb_enc_vsprintf(NULL, fmt, ap); +} + +VALUE +rb_sprintf(const char *format, ...) +{ + VALUE result; + va_list ap; + + va_start(ap, format); + result = rb_vsprintf(format, ap); + va_end(ap); + + return result; +} + +VALUE +rb_str_vcatf(VALUE str, const char *fmt, va_list ap) +{ + rb_printf_buffer_extra buffer; +#define f buffer.base + VALUE klass; + + StringValue(str); + rb_str_modify(str); + f._flags = __SWR | __SSTR; + f._bf._size = 0; + f._w = rb_str_capacity(str); + f._bf._base = (unsigned char *)str; + f._p = (unsigned char *)RSTRING_END(str); + klass = RBASIC(str)->klass; + RBASIC_CLEAR_CLASS(str); + f.vwrite = ruby__sfvwrite; + f.vextra = ruby__sfvextra; + buffer.value = 0; + BSD_vfprintf(&f, fmt, ap); + RBASIC_SET_CLASS_RAW(str, klass); + rb_str_resize(str, (char *)f._p - RSTRING_PTR(str)); +#undef f + + return str; +} + +VALUE +rb_str_catf(VALUE str, const char *format, ...) +{ + va_list ap; + + va_start(ap, format); + str = rb_str_vcatf(str, format, ap); + va_end(ap); + + return str; } |