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|
=encoding UTF-8
=head1 NAME
BH_String - Working with strings
=head1 SYNTAX
#include <BH/Math.h>
cc prog.c -o prog -lbh
=head1 DESCRIPTION
The BH_String library provides a set of functions for working with strings,
including converting numbers to strings and back.
=head1 DEFINING THE BASE
The functions of the I<StringToInt> family have an algorithm for determining
the base of a number by string prefixes:
=over
=item *
If the prefix I<0b>, then base 2
=item *
If the prefix I<0>, then base 8
=item *
If the prefix I<0x>, then base 16
=item *
Otherwise, base 10.
=back
=head1 API CALLS
=head2 BH_StringFromDouble
int BH_StringFromDouble(char *string,
size_t size,
double value,
char format,
int precision,
size_t *actual);
Formats a real number I<value> into a null-terminated string I<string>
(with a length limit of I<size>).
The I<format> parameter specifies the format for converting a number to a
string. Acceptable formats:
=over
=item B<f>, B<F>
Fixed format: [-]ddd.ddd
=item B<e>, B<E>
Scientific format: [-]d.dddedd
=item B<g>, B<G>
Fixed or scientific format, depending on which one is shorter.
=back
The I<precision> parameter sets the precision of converting a number to a
string. If the accuracy value is negative, the conversion will be performed with
the minimum required accuracy so that the reverse conversion results in the
original number.
The optional parameter I<actual> returns the length of the recorded string.
This function follows the IEEE 754 rule of rounding to an even number.
If successful, it returns 0 or an error code.
=head2 BH_StringFromInt8s
int BH_StringFromInt8s(char *string,
size_t size,
int8_t value,
int base,
size_t *actual);
Formats an 8-bit signed integer I<value> into a null-terminated string
I<string> (with a length limit of I<size>).
The I<base> parameter sets the base for the conversion.
The optional parameter I<actual> returns the length of the recorded string.
If successful, it returns 0 or an error code.
=head2 BH_StringFromInt16s
int BH_StringFromInt16s(char *string,
size_t size,
int16_t value,
int base,
size_t *actual);
Formats a 16-bit signed integer I<value> into a null-terminated string I<string>
(with a length limit of I<size>).
The I<base> parameter sets the base for the conversion.
The optional parameter I<actual> returns the length of the recorded string.
If successful, it returns 0 or an error code.
=head2 BH_StringFromInt32s
int BH_StringFromInt32s(char *string,
size_t size,
int32_t value,
int base,
size_t *actual);
Formats a 32-bit signed integer I<value> into a null-terminated string I<string>
(with a length limit of I<size>).
The I<base> parameter sets the base for the conversion.
The optional parameter I<actual> returns the length of the recorded string.
If successful, it returns 0 or an error code.
=head2 BH_StringFromInt64s
int BH_StringFromInt64s(char *string,
size_t size,
int64_t value,
int base,
size_t *actual);
Formats a 64-bit signed integer I<value> into a null-terminated string I<string>
(with a length limit of I<size>).
The I<base> parameter sets the base for the conversion.
The optional parameter I<actual> returns the length of the recorded string.
If successful, it returns 0 or an error code.
=head2 BH_StringFromInt8u
int BH_StringFromInt8u(char *string,
size_t size,
uint8_t value,
int base,
size_t *actual);
Formats an 8-bit unsigned integer I<value> into a null-terminated string
I<string> (with a length limit of I<size>).
The I<base> parameter sets the base for the conversion.
The optional parameter I<actual> returns the length of the recorded string.
If successful, it returns 0 or an error code.
=head2 BH_StringFromInt16u
int BH_StringFromInt16u(char *string,
size_t size,
uint16_t value,
int base,
size_t *actual);
Formats a 16-bit unsigned integer I<value> into a null-terminated string
I<string> (with a length limit of I<size>).
The I<base> parameter sets the base for the conversion.
The optional parameter I<actual> returns the length of the recorded string.
If successful, it returns 0 or an error code.
=head2 BH_StringFromInt32u
int BH_StringFromInt32u(char *string,
size_t size,
uint32_t value,
int base,
size_t *actual);
Formats a 32-bit unsigned integer I<value> into a null-terminated string
I<string> (with a length limit of I<size>).
The I<base> parameter sets the base for the conversion.
The optional parameter I<actual> returns the length of the recorded string.
If successful, it returns 0 or an error code.
=head2 BH_StringFromInt64u
int BH_StringFromInt64u(char *string,
size_t size,
uint64_t value,
int base,
size_t *actual);
Formats a 64-bit unsigned integer I<value> into a null-terminated string
I<string> (with a length limit of I<size>).
The I<base> parameter sets the base for the conversion.
The optional parameter I<actual> returns the length of the recorded string.
If successful, it returns 0 or an error code.
=head2 BH_StringToDouble
double BH_StringToDouble(const char *string,
size_t *size);
Converts the string I<string> to a real number.
The optional parameter I<size> returns the number of characters read from the
string.
If successful, it returns the converted number or 0.
=head2 BH_StringToInt8s
int8_t BH_StringToInt8s(const char *string,
size_t *size,
int base);
Converts the string I<string> to an 8-bit signed integer.
The optional parameter I<size> returns the number of characters read from the
string.
The optional parameter I<base> specifies the base of the number.
If successful, it returns the converted number or 0.
=head2 BH_StringToInt16s
int16_t BH_StringToInt16s(const char *string,
size_t *size,
int base);
Converts the string I<string> to a signed 16-bit integer.
The optional parameter I<size> returns the number of characters read from the
string.
The optional parameter I<base> specifies the base of the number.
If successful, it returns the converted number or 0.
=head2 BH_StringToInt32s
int32_t BH_StringToInt32s(const char *string,
size_t *size,
int base);
Converts the string I<string> to a signed 32-bit integer.
The optional parameter I<size> returns the number of characters read from the
string.
The optional parameter I<base> specifies the base of the number.
If successful, it returns the converted number or 0.
=head2 BH_StringToInt64s
int64_t BH_StringToInt64s(const char *string,
size_t *size,
int base);
Converts the string I<string> to a signed 64-bit integer.
The optional parameter I<size> returns the number of characters read from the
string.
The optional parameter I<base> specifies the base of the number.
If successful, it returns the converted number or 0.
=head2 BH_StringToInt8u
uint8_t BH_StringToInt8u(const char *string,
size_t *size,
int base);
Converts the string I<string> to an unsigned 8-bit integer.
The optional parameter I<size> returns the number of characters read from the
string.
The optional parameter I<base> specifies the base of the number.
If successful, it returns the converted number or 0.
=head2 BH_StringToInt16u
uint16_t BH_StringToInt16u(const char *string,
size_t *size,
int base);
Converts the string I<string> to an unsigned 16-bit integer.
The optional parameter I<size> returns the number of characters read from the
string.
The optional parameter I<base> specifies the base of the number.
If successful, it returns the converted number or 0.
=head2 BH_StringToInt32u
uint32_t BH_StringToInt32u(const char *string,
size_t *size,
int base);
Converts the string I<string> to an unsigned 32-bit integer.
The optional parameter I<size> returns the number of characters read from the
string.
The optional parameter I<base> specifies the base of the number.
If successful, it returns the converted number or 0.
=head2 BH_StringToInt64u
uint64_t BH_StringToInt64u(const char *string,
size_t *size,
int base);
Converts the string I<string> to an unsigned 64-bit integer.
The optional parameter I<size> returns the number of characters read from the
string.
The optional parameter I<base> specifies the base of the number.
If successful, it returns the converted number or 0.
=head2 BH_StringDup
char *BH_StringDup(const char *string);
Creates duplicate of the I<string> (simular to strdup).
=head2 BH_StringCompare
int BH_StringCompare(const char *s1,
const char *s2);
Compares two strings.
=head2 BH_StringCompareCaseless
int BH_StringCompareCaseless(const char *s1,
const char *s2);
Compares two case-insensitive strings.
=head1 SEE ALSO
L<BH>
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