Loading lib/strtoofft.c 0 → 100644 +153 −0 Original line number Diff line number Diff line /*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2003, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at http://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * * $Id$ ***************************************************************************/ #include "setup.h" #include "strtoofft.h" #ifdef NEED_CURL_STRTOLL #include <stdlib.h> #include <ctype.h> #include <errno.h> static int get_char(char c, int base); /** * Emulated version of the strtoll function. This extracts a long long * value from the given input string and returns it. */ long long Curl_strtoll(const char *nptr, char **endptr, int base) { char *end; int is_negative = 0; int overflow; int i; long long value = 0; long long newval; /* Skip leading whitespace. */ end = (char *)nptr; while (isspace((int)end[0])) { end++; } /* Handle the sign, if any. */ if (end[0] == '-') { is_negative = 1; end++; } else if (end[0] == '+') { end++; } else if (end[0] == '\0') { /* We had nothing but perhaps some whitespace -- there was no number. */ if (endptr) { *endptr = end; } return 0; } /* Handle special beginnings, if present and allowed. */ if (end[0] == '0' && end[1] == 'x') { if (base == 16 || base == 0) { end += 2; base = 16; } } else if (end[0] == '0') { if (base == 8 || base == 0) { end++; base = 8; } } /* Matching strtol, if the base is 0 and it doesn't look like * the number is octal or hex, we assume it's base 10. */ if (base == 0) { base = 10; } /* Loop handling digits. */ value = 0; overflow = 0; for (i = get_char(end[0], base); i != -1; end++, i = get_char(end[0], base)) { newval = base * value + i; if (newval < value) { /* We've overflowed. */ overflow = 1; break; } else { value = newval; } } if (!overflow) { if (is_negative) { /* Fix the sign. */ value *= -1; } } else { if (is_negative) { value = 0x8000000000000000L; } else { value = 0x7FFFFFFFFFFFFFFFL; } errno = ERANGE; } if (endptr) { *endptr = end; } return value; } /** * Returns the value of c in the given base, or -1 if c cannot * be interpreted properly in that base (i.e., is out of range, * is a null, etc.). * * @param c the character to interpret according to base * @param base the base in which to interpret c * * @return the value of c in base, or -1 if c isn't in range */ static int get_char(char c, int base) { int value = -1; if (c <= '9' && c >= '0') { value = c - '0'; } else if (c <= 'Z' && c >= 'A') { value = c - 'A' + 10; } else if (c <= 'z' && c >= 'a') { value = c - 'a' + 10; } if (value >= base) { value = -1; } return value; } #endif /* Only present if we need strtoll, but don't have it. */ lib/strtoofft.h 0 → 100644 +50 −0 Original line number Diff line number Diff line /*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2003, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at http://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * * $Id$ ***************************************************************************/ #ifndef _CURL_STRTOOFFT_R_H #define _CURL_STRTOOFFT_R_H #include "setup.h" #include <stddef.h> /* Determine what type of file offset conversion handling we wish * to use. For systems with a 32-bit off_t type, we should use * strtol. For systems with a 64-bit off_t type, we should use * strtoll if it exists, and if not, should try to emulate its * functionality. At any rate, we define 'strtoofft' such that it * can be used to work with off_t's regardless. */ #if SIZEOF_OFF_T > 4 #if HAVE_STRTOLL #define strtoofft strtoll #else long long Curl_strtoll(const char *nptr, char **endptr, int base); #define strtoofft Curl_strtoll #define NEED_CURL_STRTOLL #endif #else #define strtoofft strtol #endif #endif Loading
lib/strtoofft.c 0 → 100644 +153 −0 Original line number Diff line number Diff line /*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2003, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at http://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * * $Id$ ***************************************************************************/ #include "setup.h" #include "strtoofft.h" #ifdef NEED_CURL_STRTOLL #include <stdlib.h> #include <ctype.h> #include <errno.h> static int get_char(char c, int base); /** * Emulated version of the strtoll function. This extracts a long long * value from the given input string and returns it. */ long long Curl_strtoll(const char *nptr, char **endptr, int base) { char *end; int is_negative = 0; int overflow; int i; long long value = 0; long long newval; /* Skip leading whitespace. */ end = (char *)nptr; while (isspace((int)end[0])) { end++; } /* Handle the sign, if any. */ if (end[0] == '-') { is_negative = 1; end++; } else if (end[0] == '+') { end++; } else if (end[0] == '\0') { /* We had nothing but perhaps some whitespace -- there was no number. */ if (endptr) { *endptr = end; } return 0; } /* Handle special beginnings, if present and allowed. */ if (end[0] == '0' && end[1] == 'x') { if (base == 16 || base == 0) { end += 2; base = 16; } } else if (end[0] == '0') { if (base == 8 || base == 0) { end++; base = 8; } } /* Matching strtol, if the base is 0 and it doesn't look like * the number is octal or hex, we assume it's base 10. */ if (base == 0) { base = 10; } /* Loop handling digits. */ value = 0; overflow = 0; for (i = get_char(end[0], base); i != -1; end++, i = get_char(end[0], base)) { newval = base * value + i; if (newval < value) { /* We've overflowed. */ overflow = 1; break; } else { value = newval; } } if (!overflow) { if (is_negative) { /* Fix the sign. */ value *= -1; } } else { if (is_negative) { value = 0x8000000000000000L; } else { value = 0x7FFFFFFFFFFFFFFFL; } errno = ERANGE; } if (endptr) { *endptr = end; } return value; } /** * Returns the value of c in the given base, or -1 if c cannot * be interpreted properly in that base (i.e., is out of range, * is a null, etc.). * * @param c the character to interpret according to base * @param base the base in which to interpret c * * @return the value of c in base, or -1 if c isn't in range */ static int get_char(char c, int base) { int value = -1; if (c <= '9' && c >= '0') { value = c - '0'; } else if (c <= 'Z' && c >= 'A') { value = c - 'A' + 10; } else if (c <= 'z' && c >= 'a') { value = c - 'a' + 10; } if (value >= base) { value = -1; } return value; } #endif /* Only present if we need strtoll, but don't have it. */
lib/strtoofft.h 0 → 100644 +50 −0 Original line number Diff line number Diff line /*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2003, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at http://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * * $Id$ ***************************************************************************/ #ifndef _CURL_STRTOOFFT_R_H #define _CURL_STRTOOFFT_R_H #include "setup.h" #include <stddef.h> /* Determine what type of file offset conversion handling we wish * to use. For systems with a 32-bit off_t type, we should use * strtol. For systems with a 64-bit off_t type, we should use * strtoll if it exists, and if not, should try to emulate its * functionality. At any rate, we define 'strtoofft' such that it * can be used to work with off_t's regardless. */ #if SIZEOF_OFF_T > 4 #if HAVE_STRTOLL #define strtoofft strtoll #else long long Curl_strtoll(const char *nptr, char **endptr, int base); #define strtoofft Curl_strtoll #define NEED_CURL_STRTOLL #endif #else #define strtoofft strtol #endif #endif
