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Move numeric conversions from "str.h" to "numeric_str.h"

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This commit is contained in:
Andrew Bettison 2016-09-20 12:15:26 +09:30
parent 0bf7c5ccea
commit cd766cd480
15 changed files with 440 additions and 372 deletions
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2
cli.c
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@ -27,7 +27,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include "os.h"
#include "log.h"
#include "debug.h"
#include "str.h"
#include "numeric_str.h"
#include "strbuf_helpers.h"
#include "dataformats.h"

2
conf_schema.c
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@ -31,7 +31,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include "debug.h"
#include "mem.h"
#include "str.h"
#include "strbuf.h"
#include "numeric_str.h"
#include "strbuf_helpers.h"
#include "conf.h"
#include "dataformats.h"

1
headerfiles.mk
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@ -23,6 +23,7 @@ HDRS= fifo.h \
socket.h \
cli.h \
str.h \
numeric_str.h \
rotbuf.h \
mem.h \
os.h \

2
http_server.c
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@ -26,7 +26,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include "conf.h"
#include "log.h"
#include "debug.h"
#include "str.h"
#include "numeric_str.h"
#include "strbuf.h"
#include "strbuf_helpers.h"
#include "net.h"

2
mdp_filter.c
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@ -26,7 +26,7 @@
#include "constants.h"
#include "conf.h"
#include "mem.h"
#include "str.h"
#include "numeric_str.h"
#include "server.h"
//#define DEBUG_MDP_FILTER_PARSING 1

1
meshms_cli.c
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@ -8,6 +8,7 @@
#include "instance.h"
#include "conf.h"
#include "commandline.h"
#include "numeric_str.h"
// output the list of existing conversations for a given local identity

1
meshms_restful.c
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@ -20,6 +20,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include "serval.h"
#include "conf.h"
#include "httpd.h"
#include "numeric_str.h"
#include "strbuf_helpers.h"
DECLARE_HANDLER("/restful/meshms/", restful_meshms_);

1
network_cli.c
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@ -29,6 +29,7 @@
#include "sighandlers.h"
#include "instance.h"
#include "serval.h"
#include "numeric_str.h"
#include "overlay_buffer.h"

308
numeric_str.c Normal file
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@ -0,0 +1,308 @@
/*
Serval numerical string primitives
Copyright (C) 2012-2016 Serval Project Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#define __SERVAL_DNA__NUMERIC_STR_INLINE
#include "numeric_str.h"
#include "str.h"
#include "strbuf.h"
#include <stdlib.h>
#include <errno.h>
int str_to_uint16(const char *str, unsigned base, uint16_t *result, const char **afterp)
{
return strn_to_uint16(str, 0, base, result, afterp);
}
int strn_to_uint16(const char *str, size_t strlen, unsigned base, uint16_t *result, const char **afterp)
{
assert(base > 0);
assert(base <= 16);
uint16_t value = 0;
uint16_t newvalue = 0;
const char *const end = str + strlen;
const char *s;
for (s = str; strlen ? s < end : *s; ++s) {
int digit = hexvalue(*s);
if (digit < 0 || (unsigned)digit >= base)
break;
newvalue = value * base + digit;
if (newvalue / base != value) // overflow
break;
value = newvalue;
}
if (afterp)
*afterp = s;
if (s == str || value != newvalue || (!afterp && (strlen ? s != end : *s)))
return 0;
if (result)
*result = value;
return 1;
}
int str_to_int32(const char *str, unsigned base, int32_t *result, const char **afterp)
{
if (isspace(*str))
return 0;
const char *end = str;
errno = 0;
long value = strtol(str, (char**)&end, base);
if (afterp)
*afterp = end;
if (errno == ERANGE || end == str || value > INT32_MAX || value < INT32_MIN || isdigit(*end) || (!afterp && *end))
return 0;
if (result)
*result = value;
return 1;
}
int str_to_uint32(const char *str, unsigned base, uint32_t *result, const char **afterp)
{
return strn_to_uint32(str, 0, base, result, afterp);
}
int strn_to_uint32(const char *str, size_t strlen, unsigned base, uint32_t *result, const char **afterp)
{
assert(base > 0);
assert(base <= 16);
uint32_t value = 0;
uint32_t newvalue = 0;
const char *const end = str + strlen;
const char *s;
for (s = str; strlen ? s < end : *s; ++s) {
int digit = hexvalue(*s);
if (digit < 0 || (unsigned)digit >= base)
break;
newvalue = value * base + digit;
if (newvalue < value) // overflow
break;
value = newvalue;
}
if (afterp)
*afterp = s;
if (s == str || value > UINT32_MAX || value != newvalue || (!afterp && (strlen ? s != end : *s)))
return 0;
if (result)
*result = value;
return 1;
}
int str_is_uint64_decimal(const char *str)
{
return str_to_uint64(str, 10, NULL, NULL);
}
int str_to_int64(const char *str, unsigned base, int64_t *result, const char **afterp)
{
if (isspace(*str))
return 0;
const char *end = str;
errno = 0;
long long value = strtoll(str, (char**)&end, base);
if (afterp)
*afterp = end;
if (errno == ERANGE || end == str || isdigit(*end) || (!afterp && *end))
return 0;
if (result)
*result = value;
return 1;
}
int str_to_uint64(const char *str, unsigned base, uint64_t *result, const char **afterp)
{
return strn_to_uint64(str, 0, base, result, afterp);
}
int strn_to_uint64(const char *str, size_t strlen, unsigned base, uint64_t *result, const char **afterp)
{
assert(base > 0);
assert(base <= 16);
uint64_t value = 0;
uint64_t newvalue = 0;
const char *const end = str + strlen;
const char *s;
for (s = str; strlen ? s < end : *s; ++s) {
int digit = hexvalue(*s);
if (digit < 0 || (unsigned)digit >= base)
break;
newvalue = value * base + digit;
if (newvalue < value) // overflow
break;
value = newvalue;
}
if (afterp)
*afterp = s;
if (s == str || value > UINT64_MAX || value != newvalue || (!afterp && (strlen ? s != end : *s)))
return 0;
if (result)
*result = value;
return 1;
}
static struct scale_factor {
char symbol;
uint64_t factor;
}
scale_factors[] = {
{ 'P', 1024LL * 1024LL * 1024LL * 1024LL * 1024LL },
{ 'p', 1000LL * 1000LL * 1000LL * 1000LL * 1000LL },
{ 'T', 1024LL * 1024LL * 1024LL * 1024LL },
{ 't', 1000LL * 1000LL * 1000LL * 1000LL },
{ 'G', 1024LL * 1024LL * 1024LL },
{ 'g', 1000LL * 1000LL * 1000LL },
{ 'M', 1024LL * 1024LL },
{ 'm', 1000LL * 1000LL },
{ 'K', 1024LL },
{ 'k', 1000LL }
};
uint64_t scale_factor(const char *str, const char **afterp)
{
uint64_t factor = 1;
int i;
for (i = 0; i != NELS(scale_factors); ++i)
if (scale_factors[i].symbol == str[0]) {
++str;
factor = scale_factors[i].factor;
break;
}
if (afterp)
*afterp = str;
else if (*str)
factor = 0;
return factor;
}
int str_to_int64_scaled(const char *str, unsigned base, int64_t *result, const char **afterp)
{
int64_t value;
const char *end = str;
if (!str_to_int64(str, base, &value, &end)) {
if (afterp)
*afterp = end;
return 0;
}
value *= scale_factor(end, &end);
if (afterp)
*afterp = end;
else if (*end)
return 0;
if (result)
*result = value;
return 1;
}
int str_to_uint32_scaled(const char *str, unsigned base, uint32_t *result, const char **afterp)
{
uint32_t value;
const char *end = str;
if (!str_to_uint32(str, base, &value, &end)) {
if (afterp)
*afterp = end;
return 0;
}
value *= scale_factor(end, &end);
if (afterp)
*afterp = end;
else if (*end)
return 0;
if (result)
*result = value;
return 1;
}
int uint32_scaled_to_str(char *str, size_t len, uint32_t value)
{
char symbol = '\0';
int i;
for (i = 0; i != NELS(scale_factors); ++i)
if (value % scale_factors[i].factor == 0) {
value /= scale_factors[i].factor;
symbol = scale_factors[i].symbol;
break;
}
strbuf b = strbuf_local(str, len);
strbuf_sprintf(b, "%lu", (unsigned long) value);
if (symbol)
strbuf_putc(b, symbol);
return strbuf_overrun(b) ? 0 : 1;
}
int str_to_uint64_scaled(const char *str, unsigned base, uint64_t *result, const char **afterp)
{
uint64_t value;
const char *end = str;
if (!str_to_uint64(str, base, &value, &end)) {
if (afterp)
*afterp = end;
return 0;
}
value *= scale_factor(end, &end);
if (afterp)
*afterp = end;
else if (*end)
return 0;
if (result)
*result = value;
return 1;
}
int uint64_scaled_to_str(char *str, size_t len, uint64_t value)
{
char symbol = '\0';
int i;
for (i = 0; i != NELS(scale_factors); ++i)
if (value % scale_factors[i].factor == 0) {
value /= scale_factors[i].factor;
symbol = scale_factors[i].symbol;
break;
}
strbuf b = strbuf_local(str, len);
strbuf_sprintf(b, "%llu", (unsigned long long) value);
if (symbol)
strbuf_putc(b, symbol);
return strbuf_overrun(b) ? 0 : 1;
}
int str_to_uint64_interval_ms(const char *str, int64_t *result, const char **afterp)
{
const unsigned precision = 1000;
if (isspace(*str))
return 0;
const char *end = str;
unsigned long long value = strtoull(str, (char**)&end, 10) * precision;
if (end == str) {
if (afterp)
*afterp = end;
return 0;
}
if (end[0] == '.' && isdigit(end[1])) {
++end;
unsigned factor;
for (factor = precision / 10; isdigit(*end) && factor; factor /= 10)
value += (*end++ - '0') * factor;
}
if (afterp)
*afterp = end;
else if (*end)
return 0;
if (result)
*result = value;
return 1;
}

119
numeric_str.h Normal file
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@ -0,0 +1,119 @@
/*
Serval numerical string primitives
Copyright (C) 2012-2016 Serval Project Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __SERVAL_DNA__NUMERIC_STR_H__
#define __SERVAL_DNA__NUMERIC_STR_H__
#include <sys/types.h> // for size_t
#include <stdint.h>
#ifndef __SERVAL_DNA__NUMERIC_STR_INLINE
# if __GNUC__ && !__GNUC_STDC_INLINE__
# define __SERVAL_DNA__NUMERIC_STR_INLINE extern inline
# else
# define __SERVAL_DNA__NUMERIC_STR_INLINE inline
# endif
#endif
/* Returns 1 if the given nul-terminated string parses successfully as an unsigned 64-bit integer.
* Returns 0 if not. This is simply a shortcut for str_to_uint32(str, 10, NULL, NULL), which is
* convenient for when a pointer to a predicate function is needed.
*
* @author Andrew Bettison <andrew@servalproject.com>
*/
int str_is_uint64_decimal(const char *str);
/* Parse a NUL-terminated string as an integer in ASCII radix notation in the given 'base' (eg,
* base=10 means decimal).
*
* Returns 1 if a valid integer is parsed, storing the value in *result (unless result is NULL) and
* storing a pointer to the immediately succeeding character in *afterp. If afterp is NULL then
* returns 0 unless the immediately succeeding character is a NUL '\0'. If no integer is parsed or
* if the integer overflows (too many digits), then returns 0, leaving *result unchanged and setting
* setting *afterp to point to the character where parsing failed.
*
* @author Andrew Bettison <andrew@servalproject.com>
*/
int str_to_uint16(const char *str, unsigned base, uint16_t *result, const char **afterp);
int str_to_int32(const char *str, unsigned base, int32_t *result, const char **afterp);
int str_to_uint32(const char *str, unsigned base, uint32_t *result, const char **afterp);
int str_to_int64(const char *str, unsigned base, int64_t *result, const char **afterp);
int str_to_uint64(const char *str, unsigned base, uint64_t *result, const char **afterp);
/* Parse a length-bound string as an integer in ASCII radix notation in the given 'base' (eg,
* base=10 means decimal).
*
* Returns 1 if a valid integer is parsed, storing the value in *result (unless result is NULL) and
* storing a pointer to the immediately succeeding character in *afterp. If afterp is NULL then
* returns 0 unless all 'strlen' characters of the string were consumed. If no integer is parsed or
* if the integer overflows (too many digits), then returns 0, leaving *result unchanged and setting
* setting *afterp to point to the character where parsing failed.
*
* @author Andrew Bettison <andrew@servalproject.com>
*/
int strn_to_uint16(const char *str, size_t strlen, unsigned base, uint16_t *result, const char **afterp);
int strn_to_uint32(const char *str, size_t strlen, unsigned base, uint32_t *result, const char **afterp);
int strn_to_uint64(const char *str, size_t strlen, unsigned base, uint64_t *result, const char **afterp);
/* Parse a string as an integer in ASCII radix notation in the given 'base' (eg, base=10 means
* decimal) and scale the result by a factor given by an optional suffix "scaling" character in the
* set {kKmMgG}: 'k' = 1e3, 'K' = 1<<10, 'm' = 1e6, 'M' = 1<<20, 'g' = 1e9, 'G' = * 1<<30.
*
* Return 1 if a valid scaled integer was parsed, storing the value in *result (unless result is
* NULL) and storing a pointer to the immediately succeeding character in *afterp (unless afterp is
* NULL, in which case returns 1 only if the immediately succeeding character is a nul '\0').
* Returns 0 otherwise, leaving *result and *afterp unchanged.
*
* NOTE: an argument base > 16 will cause any trailing 'g' or 'G' character to be parsed as part of
* the integer, not as a scale suffix. Ditto for base > 20 and 'k' 'K', and base > 22 and 'm' 'M'.
*
* @author Andrew Bettison <andrew@servalproject.com>
*/
int str_to_int32_scaled(const char *str, unsigned base, int32_t *result, const char **afterp);
int str_to_uint32_scaled(const char *str, unsigned base, uint32_t *result, const char **afterp);
int str_to_int64_scaled(const char *str, unsigned base, int64_t *result, const char **afterp);
int str_to_uint64_scaled(const char *str, unsigned base, uint64_t *result, const char **afterp);
uint64_t scale_factor(const char *str, const char **afterp);
/* Format a string as a decimal integer in ASCII radix notation with a scale suffix character in the
* set {kKmMgG}: 'k' = 1e3, 'K' = 1<<10, 'm' = 1e6, 'M' = 1<<20, 'g' = 1e9, 'G' = * 1<<30 if the
* value is an exact multiple.
*
* Return 1 if the supplied string buffer was large enough to hold the formatted result plus a
* terminating nul character, 0 otherwise.
*
* @author Andrew Bettison <andrew@servalproject.com>
*/
int uint32_scaled_to_str(char *str, size_t len, uint32_t value);
int uint64_scaled_to_str(char *str, size_t len, uint64_t value);
/* Parse a string as a time interval (seconds) in millisecond resolution. Return the number of
* milliseconds. Valid strings are all unsigned ASCII decimal numbers with up to three digits after
* the decimal point.
*
* Return 1 if a valid interval was parsed, storing the number of milliseconds in *result (unless
* result is NULL) and storing a pointer to the immediately succeeding character in *afterp (unless
* afterp is NULL, in which case returns 1 only if the immediately succeeding character is a nul
* '\0'). Returns 0 otherwise, leaving *result and *afterp unchanged.
*
* @author Andrew Bettison <andrew@servalproject.com>
*/
int str_to_uint64_interval_ms(const char *str, int64_t *result, const char **afterp);
#endif // __SERVAL_DNA__NUMERIC_STR_H__

2
rhizome_bundle.c
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@ -24,7 +24,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include "serval.h"
#include "conf.h"
#include "rhizome.h"
#include "str.h"
#include "numeric_str.h"
#include "mem.h"
#include "keyring.h"
#include "dataformats.h"

1
sourcefiles.mk
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@ -23,6 +23,7 @@ SERVAL_CLIENT_SOURCES = \
strbuf.c \
strbuf_helpers.c \
str.c \
numeric_str.c \
strlcpy.c \
uuid.c \
whence.c \

280
str.c
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@ -1,6 +1,6 @@
/*
Serval string primitives
Copyright (C) 2012 Serval Project Inc.
Copyright (C) 2012-2016 Serval Project Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
@ -760,284 +760,6 @@ char *str_str(char *haystack, const char *needle, size_t haystack_len)
return NULL;
}
int str_to_uint16(const char *str, unsigned base, uint16_t *result, const char **afterp)
{
return strn_to_uint16(str, 0, base, result, afterp);
}
int strn_to_uint16(const char *str, size_t strlen, unsigned base, uint16_t *result, const char **afterp)
{
assert(base > 0);
assert(base <= 16);
uint16_t value = 0;
uint16_t newvalue = 0;
const char *const end = str + strlen;
const char *s;
for (s = str; strlen ? s < end : *s; ++s) {
int digit = hexvalue(*s);
if (digit < 0 || (unsigned)digit >= base)
break;
newvalue = value * base + digit;
if (newvalue / base != value) // overflow
break;
value = newvalue;
}
if (afterp)
*afterp = s;
if (s == str || value != newvalue || (!afterp && (strlen ? s != end : *s)))
return 0;
if (result)
*result = value;
return 1;
}
int str_to_int32(const char *str, unsigned base, int32_t *result, const char **afterp)
{
if (isspace(*str))
return 0;
const char *end = str;
errno = 0;
long value = strtol(str, (char**)&end, base);
if (afterp)
*afterp = end;
if (errno == ERANGE || end == str || value > INT32_MAX || value < INT32_MIN || isdigit(*end) || (!afterp && *end))
return 0;
if (result)
*result = value;
return 1;
}
int str_to_uint32(const char *str, unsigned base, uint32_t *result, const char **afterp)
{
return strn_to_uint32(str, 0, base, result, afterp);
}
int strn_to_uint32(const char *str, size_t strlen, unsigned base, uint32_t *result, const char **afterp)
{
assert(base > 0);
assert(base <= 16);
uint32_t value = 0;
uint32_t newvalue = 0;
const char *const end = str + strlen;
const char *s;
for (s = str; strlen ? s < end : *s; ++s) {
int digit = hexvalue(*s);
if (digit < 0 || (unsigned)digit >= base)
break;
newvalue = value * base + digit;
if (newvalue < value) // overflow
break;
value = newvalue;
}
if (afterp)
*afterp = s;
if (s == str || value > UINT32_MAX || value != newvalue || (!afterp && (strlen ? s != end : *s)))
return 0;
if (result)
*result = value;
return 1;
}
int str_is_uint64_decimal(const char *str)
{
return str_to_uint64(str, 10, NULL, NULL);
}
int str_to_int64(const char *str, unsigned base, int64_t *result, const char **afterp)
{
if (isspace(*str))
return 0;
const char *end = str;
errno = 0;
long long value = strtoll(str, (char**)&end, base);
if (afterp)
*afterp = end;
if (errno == ERANGE || end == str || isdigit(*end) || (!afterp && *end))
return 0;
if (result)
*result = value;
return 1;
}
int str_to_uint64(const char *str, unsigned base, uint64_t *result, const char **afterp)
{
return strn_to_uint64(str, 0, base, result, afterp);
}
int strn_to_uint64(const char *str, size_t strlen, unsigned base, uint64_t *result, const char **afterp)
{
assert(base > 0);
assert(base <= 16);
uint64_t value = 0;
uint64_t newvalue = 0;
const char *const end = str + strlen;
const char *s;
for (s = str; strlen ? s < end : *s; ++s) {
int digit = hexvalue(*s);
if (digit < 0 || (unsigned)digit >= base)
break;
newvalue = value * base + digit;
if (newvalue < value) // overflow
break;
value = newvalue;
}
if (afterp)
*afterp = s;
if (s == str || value > UINT64_MAX || value != newvalue || (!afterp && (strlen ? s != end : *s)))
return 0;
if (result)
*result = value;
return 1;
}
static struct scale_factor {
char symbol;
uint64_t factor;
}
scale_factors[] = {
{ 'G', 1024LL * 1024LL * 1024LL },
{ 'g', 1000LL * 1000LL * 1000LL },
{ 'M', 1024LL * 1024LL },
{ 'm', 1000LL * 1000LL },
{ 'K', 1024LL },
{ 'k', 1000LL }
};
uint64_t scale_factor(const char *str, const char **afterp)
{
uint64_t factor = 1;
int i;
for (i = 0; i != NELS(scale_factors); ++i)
if (scale_factors[i].symbol == str[0]) {
++str;
factor = scale_factors[i].factor;
break;
}
if (afterp)
*afterp = str;
else if (*str)
factor = 0;
return factor;
}
int str_to_int64_scaled(const char *str, unsigned base, int64_t *result, const char **afterp)
{
int64_t value;
const char *end = str;
if (!str_to_int64(str, base, &value, &end)) {
if (afterp)
*afterp = end;
return 0;
}
value *= scale_factor(end, &end);
if (afterp)
*afterp = end;
else if (*end)
return 0;
if (result)
*result = value;
return 1;
}
int str_to_uint32_scaled(const char *str, unsigned base, uint32_t *result, const char **afterp)
{
uint32_t value;
const char *end = str;
if (!str_to_uint32(str, base, &value, &end)) {
if (afterp)
*afterp = end;
return 0;
}
value *= scale_factor(end, &end);
if (afterp)
*afterp = end;
else if (*end)
return 0;
if (result)
*result = value;
return 1;
}
int uint32_scaled_to_str(char *str, size_t len, uint32_t value)
{
char symbol = '\0';
int i;
for (i = 0; i != NELS(scale_factors); ++i)
if (value % scale_factors[i].factor == 0) {
value /= scale_factors[i].factor;
symbol = scale_factors[i].symbol;
break;
}
strbuf b = strbuf_local(str, len);
strbuf_sprintf(b, "%lu", (unsigned long) value);
if (symbol)
strbuf_putc(b, symbol);
return strbuf_overrun(b) ? 0 : 1;
}
int str_to_uint64_scaled(const char *str, unsigned base, uint64_t *result, const char **afterp)
{
uint64_t value;
const char *end = str;
if (!str_to_uint64(str, base, &value, &end)) {
if (afterp)
*afterp = end;
return 0;
}
value *= scale_factor(end, &end);
if (afterp)
*afterp = end;
else if (*end)
return 0;
if (result)
*result = value;
return 1;
}
int uint64_scaled_to_str(char *str, size_t len, uint64_t value)
{
char symbol = '\0';
int i;
for (i = 0; i != NELS(scale_factors); ++i)
if (value % scale_factors[i].factor == 0) {
value /= scale_factors[i].factor;
symbol = scale_factors[i].symbol;
break;
}
strbuf b = strbuf_local(str, len);
strbuf_sprintf(b, "%llu", (unsigned long long) value);
if (symbol)
strbuf_putc(b, symbol);
return strbuf_overrun(b) ? 0 : 1;
}
int str_to_uint64_interval_ms(const char *str, int64_t *result, const char **afterp)
{
const unsigned precision = 1000;
if (isspace(*str))
return 0;
const char *end = str;
unsigned long long value = strtoull(str, (char**)&end, 10) * precision;
if (end == str) {
if (afterp)
*afterp = end;
return 0;
}
if (end[0] == '.' && isdigit(end[1])) {
++end;
unsigned factor;
for (factor = precision / 10; isdigit(*end) && factor; factor /= 10)
value += (*end++ - '0') * factor;
}
if (afterp)
*afterp = end;
else if (*end)
return 0;
if (result)
*result = value;
return 1;
}
/* Compute the length of the string produced by sprintf(fmt, ...).
@author Andrew Bettison <andrew@servalproject.com>
*/

89
str.h
View File

@ -1,6 +1,6 @@
/*
Serval string primitives
Copyright (C) 2012 Serval Project Inc.
Copyright (C) 2012-2016 Serval Project Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
@ -412,93 +412,6 @@ int strn_str_casecmp(const char *str1, size_t len1, const char *str2);
*/
char *str_str(char *haystack, const char *needle, size_t haystack_len);
/* -------------------- Numeric strings -------------------- */
/* Returns 1 if the given nul-terminated string parses successfully as an unsigned 64-bit integer.
* Returns 0 if not. This is simply a shortcut for str_to_uint32(str, 10, NULL, NULL), which is
* convenient for when a pointer to a predicate function is needed.
*
* @author Andrew Bettison <andrew@servalproject.com>
*/
int str_is_uint64_decimal(const char *str);
/* Parse a NUL-terminated string as an integer in ASCII radix notation in the given 'base' (eg,
* base=10 means decimal).
*
* Returns 1 if a valid integer is parsed, storing the value in *result (unless result is NULL) and
* storing a pointer to the immediately succeeding character in *afterp. If afterp is NULL then
* returns 0 unless the immediately succeeding character is a NUL '\0'. If no integer is parsed or
* if the integer overflows (too many digits), then returns 0, leaving *result unchanged and setting
* setting *afterp to point to the character where parsing failed.
*
* @author Andrew Bettison <andrew@servalproject.com>
*/
int str_to_uint16(const char *str, unsigned base, uint16_t *result, const char **afterp);
int str_to_int32(const char *str, unsigned base, int32_t *result, const char **afterp);
int str_to_uint32(const char *str, unsigned base, uint32_t *result, const char **afterp);
int str_to_int64(const char *str, unsigned base, int64_t *result, const char **afterp);
int str_to_uint64(const char *str, unsigned base, uint64_t *result, const char **afterp);
/* Parse a length-bound string as an integer in ASCII radix notation in the given 'base' (eg,
* base=10 means decimal).
*
* Returns 1 if a valid integer is parsed, storing the value in *result (unless result is NULL) and
* storing a pointer to the immediately succeeding character in *afterp. If afterp is NULL then
* returns 0 unless all 'strlen' characters of the string were consumed. If no integer is parsed or
* if the integer overflows (too many digits), then returns 0, leaving *result unchanged and setting
* setting *afterp to point to the character where parsing failed.
*
* @author Andrew Bettison <andrew@servalproject.com>
*/
int strn_to_uint16(const char *str, size_t strlen, unsigned base, uint16_t *result, const char **afterp);
int strn_to_uint32(const char *str, size_t strlen, unsigned base, uint32_t *result, const char **afterp);
int strn_to_uint64(const char *str, size_t strlen, unsigned base, uint64_t *result, const char **afterp);
/* Parse a string as an integer in ASCII radix notation in the given 'base' (eg, base=10 means
* decimal) and scale the result by a factor given by an optional suffix "scaling" character in the
* set {kKmMgG}: 'k' = 1e3, 'K' = 1<<10, 'm' = 1e6, 'M' = 1<<20, 'g' = 1e9, 'G' = * 1<<30.
*
* Return 1 if a valid scaled integer was parsed, storing the value in *result (unless result is
* NULL) and storing a pointer to the immediately succeeding character in *afterp (unless afterp is
* NULL, in which case returns 1 only if the immediately succeeding character is a nul '\0').
* Returns 0 otherwise, leaving *result and *afterp unchanged.
*
* NOTE: an argument base > 16 will cause any trailing 'g' or 'G' character to be parsed as part of
* the integer, not as a scale suffix. Ditto for base > 20 and 'k' 'K', and base > 22 and 'm' 'M'.
*
* @author Andrew Bettison <andrew@servalproject.com>
*/
int str_to_int32_scaled(const char *str, unsigned base, int32_t *result, const char **afterp);
int str_to_uint32_scaled(const char *str, unsigned base, uint32_t *result, const char **afterp);
int str_to_int64_scaled(const char *str, unsigned base, int64_t *result, const char **afterp);
int str_to_uint64_scaled(const char *str, unsigned base, uint64_t *result, const char **afterp);
uint64_t scale_factor(const char *str, const char **afterp);
/* Format a string as a decimal integer in ASCII radix notation with a scale suffix character in the
* set {kKmMgG}: 'k' = 1e3, 'K' = 1<<10, 'm' = 1e6, 'M' = 1<<20, 'g' = 1e9, 'G' = * 1<<30 if the
* value is an exact multiple.
*
* Return 1 if the supplied string buffer was large enough to hold the formatted result plus a
* terminating nul character, 0 otherwise.
*
* @author Andrew Bettison <andrew@servalproject.com>
*/
int uint32_scaled_to_str(char *str, size_t len, uint32_t value);
int uint64_scaled_to_str(char *str, size_t len, uint64_t value);
/* Parse a string as a time interval (seconds) in millisecond resolution. Return the number of
* milliseconds. Valid strings are all unsigned ASCII decimal numbers with up to three digits after
* the decimal point.
*
* Return 1 if a valid interval was parsed, storing the number of milliseconds in *result (unless
* result is NULL) and storing a pointer to the immediately succeeding character in *afterp (unless
* afterp is NULL, in which case returns 1 only if the immediately succeeding character is a nul
* '\0'). Returns 0 otherwise, leaving *result and *afterp unchanged.
*
* @author Andrew Bettison <andrew@servalproject.com>
*/
int str_to_uint64_interval_ms(const char *str, int64_t *result, const char **afterp);
/* -------------------- URI encoding and decoding -------------------- */
/* Encode up to 'srclen' bytes of byte data (or up to first nul if 'srclen' == -1) at 'src' into at

1
tfw_createfile.c
View File

@ -54,6 +54,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include <stdarg.h>
#include <assert.h>
#include "str.h"
#include "numeric_str.h"
static const char *argv0 = "test_createfile";