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Ruby: use printf format parser

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This commit is contained in:
Alex Kotov 2022-05-27 05:48:41 +03:00
parent 640a84bae2
commit c9711fbc80
Signed by: kotovalexarian
GPG key ID: 553C0EBBEB5D5F08
2 changed files with 30 additions and 60 deletions
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10
pkgs/ruby/ext/default/extconf.rb
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@ -20,6 +20,16 @@ have_func 'kernaux_itoa16'
have_func 'kernaux_snprintf'
# TODO: do something if not found?
have_func 'KernAux_PrintfFmt_Spec_create'
have_func 'KernAux_PrintfFmt_Spec_eval_flags'
have_func 'KernAux_PrintfFmt_Spec_eval_width1'
have_func 'KernAux_PrintfFmt_Spec_eval_width2'
have_func 'KernAux_PrintfFmt_Spec_eval_precision1'
have_func 'KernAux_PrintfFmt_Spec_eval_precision2'
have_func 'KernAux_PrintfFmt_Spec_eval_length'
have_func 'KernAux_PrintfFmt_Spec_eval_type'
have_func 'kernaux_cmdline'
raise 'can\'t create Makefile' unless create_makefile 'kernaux/default'

80
pkgs/ruby/ext/default/printf.c
View file

@ -41,84 +41,44 @@ VALUE rb_KernAux_snprintf1(
while (*fmt && *fmt != '%') ++fmt;
if (*(fmt++) != '%') rb_raise(rb_eArgError, "invalid format");
bool has_width = false, has_precision = false;
struct KernAux_PrintfFmt_Spec spec = KernAux_PrintfFmt_Spec_create();
KernAux_PrintfFmt_Spec_eval_flags(&spec, &fmt);
const bool has_width = KernAux_PrintfFmt_Spec_eval_width1(&spec, &fmt);
const bool has_precision = KernAux_PrintfFmt_Spec_eval_precision1(&spec, &fmt);
KernAux_PrintfFmt_Spec_eval_length(&spec, &fmt);
KernAux_PrintfFmt_Spec_eval_type(&spec, &fmt);
// Mimic printf behavior.
{
bool flags;
do {
if (*fmt == '0' || *fmt == '-' || *fmt == '+' || *fmt == ' ' ||
*fmt == '#')
{
++fmt;
flags = true;
} else {
flags = false;
}
} while (flags);
}
if (*fmt >= '0' && *fmt <= '9') {
while (*fmt >= '0' && *fmt <= '9') ++fmt;
} else if (*fmt == '*') {
++fmt;
has_width = true;
}
if (*fmt == '.') {
++fmt;
if (*fmt >= '0' && *fmt <= '9') {
while (*fmt >= '0' && *fmt <= '9') ++fmt;
} else if (*fmt == '*') {
++fmt;
has_precision = true;
}
}
if (*fmt == 'l') {
++fmt;
if (*fmt == 'l') ++fmt;
} else if (*fmt == 'h') {
++fmt;
if (*fmt == 'h') ++fmt;
} else if (*fmt == 't' || *fmt == 'j' || *fmt == 'z') {
++fmt;
}
const char c = *fmt;
if (*fmt == '%') ++fmt;
while (*fmt) {
if (*(fmt++) == '%') rb_raise(rb_eArgError, "invalid format");
}
int arg_index = 2;
int width = 0, precision = 0;
if (has_width && argc > arg_index) {
width = NUM2INT(argv_rb[arg_index++]);
KernAux_PrintfFmt_Spec_eval_width2(&spec, NUM2INT(argv_rb[arg_index++]));
}
if (has_precision && argc > arg_index) {
precision = NUM2INT(argv_rb[arg_index++]);
KernAux_PrintfFmt_Spec_eval_precision2(&spec, NUM2INT(argv_rb[arg_index++]));
}
struct DynArg dynarg = DynArg_create();
if (argc > arg_index) {
VALUE arg_rb = argv_rb[arg_index];
if (c == 'd' || c == 'i') {
if (spec.type == KERNAUX_PRINTF_FMT_TYPE_INT) {
RB_INTEGER_TYPE_P(arg_rb);
DynArg_use_long_long(&dynarg, NUM2LL(arg_rb));
} else if (c == 'u' || c == 'x' || c == 'X' || c == 'o' || c == 'b') {
} else if (spec.type == KERNAUX_PRINTF_FMT_TYPE_UINT) {
RB_INTEGER_TYPE_P(arg_rb);
DynArg_use_unsigned_long_long(&dynarg, NUM2ULL(arg_rb));
} else if (c == 'f' || c == 'F' ||
c == 'e' || c == 'E' ||
c == 'g' || c == 'G')
} else if (spec.type == KERNAUX_PRINTF_FMT_TYPE_FLOAT ||
spec.type == KERNAUX_PRINTF_FMT_TYPE_EXP)
{
RB_FLOAT_TYPE_P(arg_rb);
DynArg_use_double(&dynarg, NUM2DBL(arg_rb));
} else if (c == 'c') {
} else if (spec.type == KERNAUX_PRINTF_FMT_TYPE_CHAR) {
Check_Type(arg_rb, T_STRING);
DynArg_use_char(&dynarg, *StringValuePtr(arg_rb));
} else if (c == 's') {
} else if (spec.type == KERNAUX_PRINTF_FMT_TYPE_STR) {
Check_Type(arg_rb, T_STRING);
DynArg_use_str(&dynarg, StringValueCStr(arg_rb));
}
@ -131,18 +91,18 @@ VALUE rb_KernAux_snprintf1(
if (has_width) {
if (has_precision) {
slen = dynarg.use_dbl
? kernaux_snprintf(str, size, format, width, precision, dynarg.dbl)
: kernaux_snprintf(str, size, format, width, precision, dynarg.arg);
? kernaux_snprintf(str, size, format, spec.width, spec.precision, dynarg.dbl)
: kernaux_snprintf(str, size, format, spec.width, spec.precision, dynarg.arg);
} else {
slen = dynarg.use_dbl
? kernaux_snprintf(str, size, format, width, dynarg.dbl)
: kernaux_snprintf(str, size, format, width, dynarg.arg);
? kernaux_snprintf(str, size, format, spec.width, dynarg.dbl)
: kernaux_snprintf(str, size, format, spec.width, dynarg.arg);
}
} else {
if (has_precision) {
slen = dynarg.use_dbl
? kernaux_snprintf(str, size, format, precision, dynarg.dbl)
: kernaux_snprintf(str, size, format, precision, dynarg.arg);
? kernaux_snprintf(str, size, format, spec.precision, dynarg.dbl)
: kernaux_snprintf(str, size, format, spec.precision, dynarg.arg);
} else {
slen = dynarg.use_dbl
? kernaux_snprintf(str, size, format, dynarg.dbl)