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Refactor strtol functions.

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This commit is contained in:
Jonas 'Sortie' Termansen 2013-07-19 00:24:37 +02:00
parent cdc5a9673e
commit 1df749498a
9 changed files with 253 additions and 102 deletions
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7
libc/Makefile
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@ -25,6 +25,8 @@ dirent/alphasort.o \
dirent/dir.o \
dirent/versionsort.o \
errno/errno.o \
inttypes/strtoimax.o \
inttypes/strtoumax.o \
signal/sigaddset.o \
signal/sigdelset.o \
signal/sigemptyset.o \
@ -86,7 +88,6 @@ stdlib/bsearch.o \
stdlib/calloc.o \
stdlib/div.o \
stdlib/heap.o \
stdlib/integer.o \
stdlib/ldiv.o \
stdlib/lldiv.o \
stdlib/mblen.o \
@ -96,6 +97,10 @@ stdlib/qsort.o \
stdlib/strtod.o \
stdlib/strtof.o \
stdlib/strtold.o \
stdlib/strtoll.o \
stdlib/strtol.o \
stdlib/strtoull.o \
stdlib/strtoul.o \
stdlib/wcstombs.o \
stdlib/wctomb.o \
string/ffsll.o \

29
libc/inttypes/strtoimax.cpp Normal file
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@ -0,0 +1,29 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
inttypes/strtoimax.cpp
Converts integers represented as strings to binary representation.
*******************************************************************************/
#define STRTOL strtoimax
#define STRTOL_INT intmax_t
#define STRTOL_INT_IS_UNSIGNED false
#include "../stdlib/strtol.cpp"

29
libc/inttypes/strtoumax.cpp Normal file
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@ -0,0 +1,29 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
inttypes/strtoumax.cpp
Converts integers represented as strings to binary representation.
*******************************************************************************/
#define STRTOL strtoumax
#define STRTOL_INT uintmax_t
#define STRTOL_INT_IS_UNSIGNED true
#include "../stdlib/strtol.cpp"

0
libc/sortix/inttypes/.gitignore vendored Normal file
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101
libc/stdlib/integer.cpp
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@ -1,101 +0,0 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
stdlib/integer.cpp
Converts integers represented as strings to binary representation.
*******************************************************************************/
#include <ctype.h>
#include <inttypes.h>
#include <stddef.h>
#include <stdlib.h>
static int Debase(char c)
{
if ( '0' <= c && c <= '9' ) { return c - '0'; }
if ( 'a' <= c && c <= 'z' ) { return 10 + c - 'a'; }
if ( 'A' <= c && c <= 'Z' ) { return 10 + c - 'A'; }
return -1;
}
template <class INT, bool UNSIGNED> INT ParseInteger(const char* str, char** endptr, int base)
{
const char* origstr = str;
int origbase = base;
while ( isspace(*str) ) { str++; }
if ( base < 0 || 36 < base ) { if ( endptr ) { *endptr = (char*) str; } return 0; }
INT result = 0;
bool negative = false;
char c = *str;
if ( !UNSIGNED && c == '-' ) { str++; negative = true; }
if ( !UNSIGNED && c == '+' ) { str++; negative = false; }
if ( !base && str[0] == '0' )
{
if ( str[1] == 'x' || str[1] == 'X' ) { str += 2; base = 16; }
else if ( 0 <= Debase(str[1]) && Debase(str[1]) < 8 ) { str++; base = 8; }
}
if ( !base ) { base = 10; }
if ( origbase == 16 && str[0] == '0' && (str[1] == 'x' || str[1] == 'X') ) { str += 2; }
size_t numconvertedchars = 0;
while ( (c = *str ) )
{
int val = Debase(c);
if ( val < 0 ) { break; }
if ( base <= val ) { break; }
if ( !UNSIGNED && negative ) { val = -val; }
// TODO: Detect overflow!
result = result * (INT) base + (INT) val;
str++;
numconvertedchars++;
}
if ( !numconvertedchars ) { str = origstr; result = 0; }
if ( endptr ) { *endptr = (char*) str; }
return result;
}
extern "C" long strtol(const char* str, char** endptr, int base)
{
return ParseInteger<long, false>(str, endptr, base);
}
extern "C" long long strtoll(const char* str, char** endptr, int base)
{
return ParseInteger<long long, false>(str, endptr, base);
}
extern "C" intmax_t strtoimax(const char* str, char** endptr, int base)
{
return ParseInteger<intmax_t, false>(str, endptr, base);
}
extern "C" unsigned long strtoul(const char* str, char** endptr, int base)
{
return ParseInteger<unsigned long, true>(str, endptr, base);
}
extern "C" unsigned long long strtoull(const char* str, char** endptr, int base)
{
return ParseInteger<unsigned long long, true>(str, endptr, base);
}
extern "C" uintmax_t strtoumax(const char* str, char** endptr, int base)
{
return ParseInteger<uintmax_t, true>(str, endptr, base);
}

102
libc/stdlib/strtol.cpp Normal file
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@ -0,0 +1,102 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
stdlib/strtol.cpp
Converts integers represented as strings to binary representation.
*******************************************************************************/
#ifndef STRTOL
#define STRTOL strtol
#define STRTOL_INT long
#define STRTOL_INT_IS_UNSIGNED false
#endif
#include <ctype.h>
#include <inttypes.h>
#include <stddef.h>
#include <stdlib.h>
static int Debase(char c)
{
if ( '0' <= c && c <= '9' )
return c - '0';
if ( 'a' <= c && c <= 'z' )
return 10 + c - 'a';
if ( 'A' <= c && c <= 'Z' )
return 10 + c - 'A';
return -1;
}
template <class INT, bool UNSIGNED>
INT ParseInteger(const char* str, char** endptr, int base)
{
const char* origstr = str;
int origbase = base;
while ( isspace(*str) ) { str++; }
if ( base < 0 || 36 < base )
{
if ( endptr )
*endptr = (char*) str;
return 0;
}
INT result = 0;
bool negative = false;
char c = *str;
if ( !UNSIGNED && c == '-' )
str++, negative = true;
if ( !UNSIGNED && c == '+' )
str++, negative = false;
if ( !base && str[0] == '0' )
{
if ( str[1] == 'x' || str[1] == 'X' )
str += 2, base = 16;
else if ( 0 <= Debase(str[1]) && Debase(str[1]) < 8 )
str++, base = 8;
}
if ( !base )
base = 10;
if ( origbase == 16 && str[0] == '0' && (str[1] == 'x' || str[1] == 'X') )
str += 2;
size_t numconvertedchars = 0;
while ( (c = *str ) )
{
int val = Debase(c);
if ( val < 0 )
break;
if ( base <= val )
break;
if ( !UNSIGNED && negative )
val = -val;
// TODO: Detect overflow!
result = result * (INT) base + (INT) val;
str++;
numconvertedchars++;
}
if ( !numconvertedchars )
str = origstr, result = 0;
if ( endptr )
*endptr = (char*) str;
return result;
}
extern "C" STRTOL_INT STRTOL(const char* str, char** endptr, int base)
{
return ParseInteger<STRTOL_INT, STRTOL_INT_IS_UNSIGNED>(str, endptr, base);
}

29
libc/stdlib/strtoll.cpp Normal file
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@ -0,0 +1,29 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
stdlib/strtoll.cpp
Converts integers represented as strings to binary representation.
*******************************************************************************/
#define STRTOL strtoll
#define STRTOL_INT long long
#define STRTOL_INT_IS_UNSIGNED true
#include "strtol.cpp"

29
libc/stdlib/strtoul.cpp Normal file
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@ -0,0 +1,29 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
stdlib/strtoul.cpp
Converts integers represented as strings to binary representation.
*******************************************************************************/
#define STRTOL strtoul
#define STRTOL_INT unsigned long
#define STRTOL_INT_IS_UNSIGNED true
#include "strtol.cpp"

29
libc/stdlib/strtoull.cpp Normal file
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@ -0,0 +1,29 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
stdlib/strtoull.cpp
Converts integers represented as strings to binary representation.
*******************************************************************************/
#define STRTOL strtoull
#define STRTOL_INT unsigned long long
#define STRTOL_INT_IS_UNSIGNED true
#include "strtol.cpp"