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gmio_core/internal: add gmio_clocale_isdigit()

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Also use tables for islower/isupper conversions
This commit is contained in:
Hugues Delorme 2015-10-21 18:37:21 +02:00
parent 49d91f8a8c
commit 88252c8f8d
1 changed files with 53 additions and 4 deletions
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57
src/gmio_core/internal/string_utils.h
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@ -18,6 +18,8 @@
#include "../global.h"
#include <string.h>
#ifdef GMIO_STRINGUTILS_CTYPE_H
# include <ctype.h>
#endif
@ -25,13 +27,14 @@
/*! Returns non-zero if \p c is a space (for C-locale), zero otherwise */
GMIO_INLINE int gmio_clocale_isspace(char c)
{
#if defined(GMIO_STRINGUTILS_DIRECT_TESTS)
/* 0x20 : space (SPC)
* 0x09 : horizontal tab (TAB)
* 0x0a : newline (LF)
* 0x0b : vertical tab (VT)
* 0x0c : feed (FF)
* 0x0d : carriage return (CR) */
#if defined(GMIO_STRINGUTILS_DIRECT_TESTS)
/* TODO: eliminate branch */
return c == 0x20 || ((uint8_t)(c - 0x09) < 5);
#elif defined(GMIO_STRINGUTILS_C_ARRAYS)
static const unsigned char space_chars[] = {
@ -58,11 +61,35 @@ GMIO_INLINE int gmio_clocale_isspace(char c)
#endif
}
GMIO_INLINE int gmio_clocale_isdigit(char c)
{
static const unsigned char digit_chars[] = {
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,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 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, 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, 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, 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, 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, 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, 0, 0, 0, 0, 0, 0
};
return digit_chars[c];
}
/*! Returns non-zero if \p c is an uppercase letter (for C-locale), zero
* otherwise */
GMIO_INLINE int gmio_clocale_isupper(char c)
{
#if defined(GMIO_STRINGUTILS_DIRECT_TESTS)
/* TODO: eliminate branch */
return 65 <= c && c <= 90;
#elif defined(GMIO_STRINGUTILS_C_ARRAYS)
static const unsigned char upper_chars[] = {
@ -94,6 +121,7 @@ GMIO_INLINE int gmio_clocale_isupper(char c)
GMIO_INLINE int gmio_clocale_islower(char c)
{
#if defined(GMIO_STRINGUTILS_DIRECT_TESTS)
/* TODO: eliminate branch */
return 97 <= c && c <= 122;
#elif defined(GMIO_STRINGUTILS_C_ARRAYS)
static const unsigned char lower_chars[] = {
@ -123,13 +151,33 @@ GMIO_INLINE int gmio_clocale_islower(char c)
/*! Returns the lowercase letter converted to uppercase */
GMIO_INLINE char gmio_clocale_toupper(char c)
{
return gmio_clocale_islower(c) ? c - 32 : c;
static const uint8_t table_toupper[128] = {
0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,0x09,0x0A, 0 , 0 ,0x0D, 0 , 0 ,
0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
' ', '!', '"', '#', '$', '%', '&','\'', '(', ')', '*', '+', ',', '-', '.', '/',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?',
'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[','\\', ']', '^', '_',
'`', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '{', '|', '}', '~', 0,
};
return table_toupper[c];
}
/*! Returns the uppercase letter converted to lowercase */
GMIO_INLINE char gmio_clocale_tolower(char c)
{
return gmio_clocale_isupper(c) ? c + 32 : c;
static const uint8_t table_tolower[128] = {
0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,0x09,0x0A, 0 , 0 ,0x0D, 0 , 0 ,
0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
' ', '!', '"', '#', '$', '%', '&','\'', '(', ')', '*', '+', ',', '-', '.', '/',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?',
'@', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '[','\\', ']', '^', '_',
'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', 0,
};
return table_tolower[c];
}
/*! Returns true if \p c1 compare equals to \p c2
@ -138,6 +186,7 @@ GMIO_INLINE char gmio_clocale_tolower(char c)
*/
GMIO_INLINE gmio_bool_t gmio_clocale_char_iequals(char c1, char c2)
{
/* TODO: eliminate branch */
return c1 == c2 || (gmio_clocale_toupper(c1) == gmio_clocale_toupper(c2));
}
@ -148,7 +197,7 @@ GMIO_INLINE gmio_bool_t gmio_clocale_char_iequals(char c1, char c2)
GMIO_INLINE int gmio_stricmp(const char* str1, const char* str2)
{
while (*str1 != 0 && *str2 != 0) {
if (gmio_clocale_char_iequals(*str1, *str2) == GMIO_FALSE)
if (!gmio_clocale_char_iequals(*str1, *str2))
return 1;
++str1;
++str2;