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cstr.h
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cstr.h
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/*
------------------------------------------------------------------------------
Licensing information can be found at the end of the file.
------------------------------------------------------------------------------
cstr.h - v1.0 - String interning and manipulation library for C/C++.
Do this:
#define CSTR_IMPLEMENTATION
before you include this file in *one* C/C++ file to create the implementation.
*/
#ifndef cstr_h
#define cstr_h
#ifndef CSTR_U32
#define CSTR_U32 unsigned int
#endif
#ifndef CSTR_SIZE_T
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <stddef.h>
#define CSTR_SIZE_T size_t
#endif
#ifndef CSTR_BOOL_T
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <stdbool.h>
#define CSTR_BOOL_T bool
#endif
#ifndef CSTR_VA_LIST_T
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <stdarg.h>
#define CSTR_VA_LIST_T va_list
#endif
#ifndef CSTR_NO_GLOBAL_API
void cstr_reset( void );
struct cstr_restore_point_t;
struct cstr_restore_point_t* cstr_restore_point( void );
void cstr_rollback( struct cstr_restore_point_t* restore_point );
char const* cstr( char const* str );
char const* cstr_n( char const* str, CSTR_SIZE_T n );
CSTR_BOOL_T cstr_is_interned( char const* str );
CSTR_SIZE_T cstr_len( char const* str );
char const* cstr_cat( char const* a, char const* b );
char const* cstr_vformat( char const* format, CSTR_VA_LIST_T args );
char const* cstr_format( char const* format, ... );
char const* cstr_trim( char const* str );
char const* cstr_ltrim( char const* str );
char const* cstr_rtrim( char const* str );
char const* cstr_left( char const* str, size_t n );
char const* cstr_right( char const* str, size_t n );
char const* cstr_mid( char const* str, size_t start, size_t n );
char const* cstr_upper( char const* str );
char const* cstr_lower( char const* str );
char const* cstr_lpad( char const* str, char padding, CSTR_SIZE_T total_max_length );
char const* cstr_rpad( char const* str, char padding, CSTR_SIZE_T total_max_length );
char const* cstr_join( char const* a, char const* b, char const* separator );
char const* cstr_replace( char const* str, char const* find, char const* replacement );
char const* cstr_insert( char const* str, int position, char const* insertion );
char const* cstr_remove( char const* str, int start, int length );
char const* cstr_int( int i );
char const* cstr_float( float f );
CSTR_BOOL_T cstr_starts( char const* str, char const* start );
CSTR_BOOL_T cstr_ends( char const* str, char const* end );
CSTR_BOOL_T cstr_is_equal( char const* a, char const* b );
int cstr_compare( char const* a, char const* b );
int cstr_compare_nocase( char const* a, char const* b );
int cstr_find( char const* str, char const* find, int start );
int cstr_rfind( char const* str, char const* find, int start );
CSTR_U32 cstr_hash( char const* str );
struct cstr_tokenizer_t { void* internal; };
struct cstr_tokenizer_t cstr_tokenizer( char const* str );
char const* cstr_tokenize( struct cstr_tokenizer_t* tokenizer, char const* separators );
#endif /* CSTR_NO_GLOBAL_API */
#ifdef CSTR_INSTANCE_API
struct cstri_t;
struct cstri_t* cstri_create( void* memctx );
void cstri_destroy( struct cstri_t* cstri );
void cstri_reset( struct cstri_t* cstri );
struct cstr_restore_point_t* cstri_restore_point( struct cstri_t* cstri );
void cstri_rollback( struct cstri_t* cstri, struct cstr_restore_point_t* restore_point );
char const* cstri( struct cstri_t* cstri, char const* str );
char const* cstri_n( struct cstri_t* cstri, char const* str, CSTR_SIZE_T n );
CSTR_BOOL_T cstri_is_interned( struct cstri_t* cstri, char const* str );
CSTR_SIZE_T cstri_len( struct cstri_t* cstri, char const* str );
char const* cstri_cat( struct cstri_t* cstri, char const* a, char const* b );
char const* cstri_vformat( struct cstri_t* cstri, char const* format, CSTR_VA_LIST_T args );
char const* cstri_format( struct cstri_t* cstri, char const* format, ... );
char const* cstri_trim( struct cstri_t* cstri, char const* str );
char const* cstri_ltrim( struct cstri_t* cstri, char const* str );
char const* cstri_rtrim( struct cstri_t* cstri, char const* str );
char const* cstri_left( struct cstri_t* cstri, char const* str, size_t n );
char const* cstri_right( struct cstri_t* cstri, char const* str, size_t n );
char const* cstri_mid( struct cstri_t* cstri, char const* str, size_t start, size_t n );
char const* cstri_upper( struct cstri_t* cstri, char const* str );
char const* cstri_lower( struct cstri_t* cstri, char const* str );
char const* cstri_lpad( struct cstri_t* cstri, char const* str, char padding, CSTR_SIZE_T total_max_length );
char const* cstri_rpad( struct cstri_t* cstri, char const* str, char padding, CSTR_SIZE_T total_max_length );
char const* cstri_join( struct cstri_t* cstri, char const* a, char const* b, char const* separator );
char const* cstri_replace( struct cstri_t* cstri, char const* str, char const* find, char const* replacement );
char const* cstri_insert( struct cstri_t* cstri, char const* str, int position, char const* insertion );
char const* cstri_remove( struct cstri_t* cstri, char const* str, int start, int length );
char const* cstri_int( struct cstri_t* cstri, int i );
char const* cstri_float( struct cstri_t* cstri, float f );
CSTR_BOOL_T cstri_starts( struct cstri_t* cstri, char const* str, char const* start );
CSTR_BOOL_T cstri_ends( struct cstri_t* cstri, char const* str, char const* end );
CSTR_BOOL_T cstri_is_equal( struct cstri_t* cstri, char const* a, char const* b );
int cstri_compare( struct cstri_t* cstri, char const* a, char const* b );
int cstri_compare_nocase( struct cstri_t* cstri, char const* a, char const* b );
int cstri_find( struct cstri_t* cstri, char const* str, char const* find, int start );
int cstri_rfind( struct cstri_t* cstri, char const* str, char const* find, int start );
CSTR_U32 cstri_hash( struct cstri_t* cstri, char const* str );
struct cstr_tokenizer_t cstri_tokenizer( struct cstri_t* cstri, char const* str );
char const* cstri_tokenize( struct cstri_t* cstri, struct cstr_tokenizer_t* tokenizer, char const* separators );
#endif /* CSTR_INSTANCE_API */
#endif /* cstr_h */
/**
cstr.h
======
*/
// If we are running tests on windows
#if defined( CSTR_RUN_TESTS ) && defined( _WIN32 ) && !defined( __TINYC__ )
// To get file names/line numbers with meory leak detection, we need to include crtdbg.h before all other files
#define _CRTDBG_MAP_ALLOC
#include <crtdbg.h>
#endif
/*
----------------------
IMPLEMENTATION
----------------------
*/
#ifdef CSTR_IMPLEMENTATION
#undef CSTR_IMPLEMENTATION
#ifndef CSTR_DEFAULT_BLOCK_SIZE
#define CSTR_DEFAULT_BLOCK_SIZE 0x400000 /* 4 MB */
#endif
#ifndef CSTR_MUTEX_LOCK
#define CSTR_MUTEX_LOCK()
#define CSTR_MUTEX_UNLOCK()
#endif
#ifndef CSTR_ASSERT
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <assert.h>
#define CSTR_ASSERT( expression, message ) assert( ( expression ) && ( message ) )
#endif
#ifndef CSTR_ISSPACE
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <ctype.h>
#define CSTR_ISSPACE( c ) ( isspace( c ) )
#endif
#ifndef CSTR_TOUPPER
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <ctype.h>
#define CSTR_TOUPPER( c ) ( toupper( c ) )
#endif
#ifndef CSTR_TOLOWER
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <ctype.h>
#define CSTR_TOLOWER( c ) ( tolower( c ) )
#endif
#ifndef CSTR_MEMCPY
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <string.h>
#define CSTR_MEMCPY( dst, src, cnt ) ( memcpy( (dst), (src), (cnt) ) )
#endif
#ifndef CSTR_MEMCMP
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <string.h>
#define CSTR_MEMCMP( a, b, cnt ) ( memcmp( (a), (b), (cnt) ) )
#endif
#ifndef CSTR_MEMSET
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <string.h>
#define CSTR_MEMSET( ptr, val, cnt ) ( memset( (ptr), (val), (cnt) ) )
#endif
#ifndef CSTR_STRLEN
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <string.h>
#define CSTR_STRLEN( s ) ( strlen( s ) )
#endif
#ifndef CSTR_STRSTR
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#define CSTR_STRSTR( s1, s2 ) ( strstr( (s1), (s2) ) )
#endif
#ifndef CSTR_STRNICMP
#ifdef _WIN32
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <string.h>
#define CSTR_STRNICMP( s1, s2, len ) ( strnicmp( (s1), (s2), (len) ) )
#else
#include <string.h>
#define CSTR_STRNICMP( s1, s2, len ) ( strncasecmp( (s1), (s2), (len) ) )
#endif
#endif
#ifndef CSTR_VSNPRINTF
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#define CSTR_VSNPRINTF( s, n, fmt, args ) ( vsnprintf( (s), (n), (fmt), (args) ) )
#endif
#ifndef CSTR_MALLOC
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <stdlib.h>
#define CSTR_MALLOC( ctx, size ) ( malloc( size ) )
#define CSTR_FREE( ctx, ptr ) ( free( ptr ) )
#endif
#define _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_SECURE_NO_WARNINGS
#include <stdarg.h>
//// instance api
struct cstr_block_t {
char* head;
char* tail;
char* end;
};
struct cstr_slot_t {
CSTR_U32 hash;
CSTR_SIZE_T length;
char const* string;
};
struct cstri_t {
void* memctx;
CSTR_SIZE_T blocks_count;
CSTR_SIZE_T blocks_capacity;
struct cstr_block_t* blocks;
CSTR_SIZE_T hash_table_count;
CSTR_SIZE_T hash_table_capacity;
struct cstr_slot_t* hash_table;
CSTR_SIZE_T temp_capacity;
char* temp_buffer;
};
static CSTR_U32 internal_cstr_hash( char const* str, CSTR_SIZE_T length ) {
CSTR_U32 m = 0x5bd1e995u;
CSTR_U32 h = 0x31313137u;
while( length >= 4 ) {
CSTR_U32 k = *(CSTR_U32 *)str;
k *= m;
k ^= k >> 24;
k *= m;
h *= m;
h ^= k;
str += 4;
length -= 4;
}
switch( length ) {
case 3: h ^= str[ 2 ] << 16;
case 2: h ^= str[ 1 ] << 8;
case 1: h ^= str[ 0 ];
h *= m;
}
h ^= h >> 13;
h *= m;
h ^= h >> 15;
return h;
}
static struct cstr_slot_t* internal_cstr_interned( struct cstri_t* cstri, char const* str ) {
if( str ) {
for( CSTR_SIZE_T i = 0; i < cstri->blocks_count; ++i ) {
if( str >= cstri->blocks[ i ].head + sizeof( CSTR_SIZE_T ) + sizeof( CSTR_U32 ) && str < cstri->blocks[ i ].end ) {
str -= sizeof( CSTR_U32 );
CSTR_U32 hash = *(CSTR_U32*) str;
str -= sizeof( CSTR_SIZE_T );
size_t slot = ( hash & ( cstri->hash_table_capacity - 1 ) );
while( cstri->hash_table[ slot ].string ) {
if( cstri->hash_table[ slot ].string == str ) {
return &cstri->hash_table[ slot ];
}
slot = ( slot + 1 ) & ( cstri->hash_table_capacity - 1 );
}
return NULL;
}
}
}
return NULL;
}
static struct cstr_slot_t* internal_cstr_find_slot( struct cstri_t* cstri, CSTR_U32 hash, char const* str, CSTR_SIZE_T len ) {
size_t slot = ( hash & ( cstri->hash_table_capacity - 1 ) );
while( cstri->hash_table[ slot ].string ) {
if( cstri->hash_table[ slot ].hash == hash && cstri->hash_table[ slot ].length == len ) {
char const* slot_string = cstri->hash_table[ slot ].string + sizeof( CSTR_SIZE_T ) + sizeof( CSTR_U32 );
if( CSTR_MEMCMP( slot_string, str, len ) == 0 ) {
break;
}
}
slot = ( slot + 1 ) & ( cstri->hash_table_capacity - 1 );
}
return &cstri->hash_table[ slot ];
}
static char const* internal_cstr_insert( struct cstri_t* cstri, char const* str, CSTR_SIZE_T n ) {
struct cstr_slot_t* interned = internal_cstr_interned( cstri, str );
if( interned && interned->length == n ) {
return interned->string + sizeof( CSTR_SIZE_T ) + sizeof( CSTR_U32 );
}
if( !str ) {
str = "";
n = 0;
}
CSTR_U32 hash = internal_cstr_hash( str, n );
struct cstr_slot_t* slot = internal_cstr_find_slot( cstri, hash, str, n );
if( slot->string ) {
return slot->string + sizeof( CSTR_SIZE_T ) + sizeof( CSTR_U32 );
}
if( cstri->hash_table_count >= cstri->hash_table_capacity / 3 ) {
size_t old_capacity = cstri->hash_table_capacity;
struct cstr_slot_t* old_table = cstri->hash_table;
cstri->hash_table_capacity *= 2;
cstri->hash_table = (struct cstr_slot_t*) CSTR_MALLOC( cstri->memctx,
cstri->hash_table_capacity * sizeof( *cstri->hash_table ) );
CSTR_MEMSET( cstri->hash_table, 0, cstri->hash_table_capacity * sizeof( *cstri->hash_table ) );
for( size_t i = 0; i < old_capacity; ++i ) {
if( old_table[ i ].string ) {
CSTR_U32 entry_hash = old_table[ i ].hash;
size_t new_slot = ( entry_hash & cstri->hash_table_capacity - 1 );
while( cstri->hash_table[ new_slot ].string ) {
new_slot = ( new_slot + 1 ) & ( cstri->hash_table_capacity - 1 );
}
cstri->hash_table[ new_slot ] = old_table[ i ];
}
}
CSTR_FREE( cstri->memctx, old_table );
slot = internal_cstr_find_slot( cstri, hash, str, n );
}
CSTR_SIZE_T alloc_len = ( n + 1 + sizeof( CSTR_SIZE_T ) + sizeof( CSTR_U32 ) + 0xf ) & ~(CSTR_SIZE_T)0xf;
struct cstr_block_t* block = NULL;
if( cstri->blocks_count > 0 ) {
struct cstr_block_t* b = &cstri->blocks[ cstri->blocks_count - 1 ];
if( (CSTR_SIZE_T)( b->end - b->tail ) >= alloc_len ) {
block = b;
}
}
if( !block ) {
if( cstri->blocks_count >= cstri->blocks_capacity ) {
cstri->blocks_capacity *= 2;
void* new_blocks = CSTR_MALLOC( cstri->memctx, cstri->blocks_capacity * sizeof( struct cstr_block_t ) );
CSTR_MEMCPY( new_blocks, cstri->blocks, cstri->blocks_count * sizeof( struct cstr_block_t ) );
CSTR_FREE( cstri->memctx, cstri->blocks );
cstri->blocks = (struct cstr_block_t*) new_blocks;
}
block = &cstri->blocks[ cstri->blocks_count++ ];
CSTR_SIZE_T size = alloc_len <= CSTR_DEFAULT_BLOCK_SIZE ? CSTR_DEFAULT_BLOCK_SIZE : alloc_len;
block->head = (char*) CSTR_MALLOC( cstri->memctx, size );
block->tail = block->head;
block->end = block->head + size;
}
char* item = block->tail;
block->tail += alloc_len;
slot->hash = hash;
slot->length = n;
slot->string = item;
++cstri->hash_table_count;
*(CSTR_SIZE_T*)item = n;
item += sizeof( CSTR_SIZE_T );
*(CSTR_U32*)item = hash;
item += sizeof( CSTR_U32 );
CSTR_MEMCPY( item, str, n );
item[ n ] = '\0';
return item;
}
static char* internal_cstr_temp_buffer( struct cstri_t* cstri, size_t capacity ) {
if( cstri->temp_capacity <= capacity ) {
CSTR_FREE( cstri->memctx, cstri->temp_buffer );
while( cstri->temp_capacity <= capacity ) {
cstri->temp_capacity *= 2;
}
cstri->temp_buffer = (char*) CSTR_MALLOC( cstri->memctx, cstri->temp_capacity );
}
return cstri->temp_buffer;
}
struct cstri_t* cstri_create( void* memctx ) {
struct cstri_t* cstri = (struct cstri_t*) CSTR_MALLOC( memctx, sizeof( struct cstri_t ) );
cstri->memctx = memctx;
cstri->blocks_count = 0;
cstri->blocks_capacity = 16;
cstri->blocks = (struct cstr_block_t*) CSTR_MALLOC( memctx, cstri->blocks_capacity * sizeof( *cstri->blocks ) );
cstri->hash_table_count = 1024;
cstri->hash_table_capacity = 1024;
cstri->hash_table = (struct cstr_slot_t*) CSTR_MALLOC( memctx, cstri->hash_table_capacity * sizeof( *cstri->hash_table ) );
CSTR_MEMSET( cstri->hash_table, 0, cstri->hash_table_capacity * sizeof( *cstri->hash_table ) );
cstri->temp_capacity = 1024;
cstri->temp_buffer = (char*) CSTR_MALLOC( memctx, cstri->temp_capacity );
return cstri;
}
void cstri_destroy( struct cstri_t* cstri ) {
CSTR_FREE( cstri->memctx, cstri->temp_buffer );
CSTR_FREE( cstri->memctx, cstri->hash_table );
for( CSTR_SIZE_T i = 0; i < cstri->blocks_count; ++i ) {
CSTR_FREE( cstri->memctx, cstri->blocks[ i ].head );
}
CSTR_FREE( cstri->memctx, cstri->blocks );
CSTR_FREE( cstri->memctx, cstri );
}
void cstri_reset( struct cstri_t* cstri ) {
for( CSTR_SIZE_T i = 0; i < cstri->blocks_count; ++i ) {
CSTR_FREE( cstri->memctx, cstri->blocks[ i ].head );
}
cstri->blocks_count = 0;
CSTR_MEMSET( cstri->hash_table, 0, cstri->hash_table_capacity * sizeof( *cstri->hash_table ) );
}
struct cstr_restore_point_t* cstri_restore_point( struct cstri_t* cstri ) {
return (struct cstr_restore_point_t*)( cstri->blocks_count > 0 ? cstri->blocks[ cstri->blocks_count - 1 ].tail : NULL );
}
void cstri_rollback( struct cstri_t* cstri, struct cstr_restore_point_t* restore_point ) {
// find the block containing the restore point
CSTR_SIZE_T index = cstri->blocks_count;
for( CSTR_SIZE_T i = 0; i < cstri->blocks_count; ++i ) {
if( restore_point >= (struct cstr_restore_point_t*)cstri->blocks[ i ].head
&& restore_point <= (struct cstr_restore_point_t*)cstri->blocks[ i ].tail ) {
index = i;
break;
}
}
// ignore invalid restore points
if( index >= cstri->blocks_count ) {
return;
}
// remove blocks allocated after restore point
cstri->blocks[ index ].tail = (char*)restore_point;
for( CSTR_SIZE_T i = index + 1; i < cstri->blocks_count; ++i ) {
CSTR_FREE( cstri->memctx, cstri->blocks[ i ].head );
}
cstri->blocks_count = index + 1;
// recreate hash table
CSTR_MEMSET( cstri->hash_table, 0, cstri->hash_table_capacity * sizeof( *cstri->hash_table ) );
for( CSTR_SIZE_T i = 0; i < cstri->blocks_count; ++i ) {
struct cstr_block_t* block = &cstri->blocks[ i ];
char const* ptr = block->head;
while( ptr + sizeof( CSTR_SIZE_T ) + sizeof( CSTR_U32 ) < block->tail ) {
CSTR_SIZE_T len = *(CSTR_SIZE_T*)ptr;
CSTR_U32 hash = *(CSTR_U32*)( ptr + sizeof( CSTR_SIZE_T ) );
size_t slot = ( hash & ( cstri->hash_table_capacity - 1 ) );
while( cstri->hash_table[ slot ].string ) {
slot = ( slot + 1 ) & ( cstri->hash_table_capacity - 1 );
}
cstri->hash_table[ slot ].hash = hash;
cstri->hash_table[ slot ].length = len;
cstri->hash_table[ slot ].string = ptr;
ptr += ( len + 1 + sizeof( CSTR_SIZE_T ) + sizeof( CSTR_U32 ) + 0xf ) & ~(CSTR_SIZE_T)0xf;
}
}
}
char const* cstri( struct cstri_t* cstri, char const* str ) {
return internal_cstr_insert( cstri, str, str ? CSTR_STRLEN( str ) : 0 );
}
char const* cstri_n( struct cstri_t* cstri, char const* str, CSTR_SIZE_T n ) {
if( !str ) {
return internal_cstr_insert( cstri, "", 0 );
}
CSTR_SIZE_T len = 0;
while( str[ len ] && len < n ) {
++len;
}
return internal_cstr_insert( cstri, str, len );
}
CSTR_BOOL_T cstri_is_interned( struct cstri_t* cstri, char const* str ) {
if( !str ) return 0;
struct cstr_slot_t* slot = internal_cstr_interned( cstri, str );
return slot != NULL;
}
CSTR_SIZE_T cstri_len( struct cstri_t* cstri, char const* str ) {
if( !str ) return 0;
struct cstr_slot_t* slot = internal_cstr_interned( cstri, str );
if( slot ) {
return slot->length;
} else {
return CSTR_STRLEN( str );
}
}
char const* cstri_cat( struct cstri_t* cstri, char const* a, char const* b ) {
CSTR_SIZE_T len_a = cstri_len( cstri, a );
CSTR_SIZE_T len_b = cstri_len( cstri, b );
CSTR_SIZE_T len = len_a + len_b;
char* temp = internal_cstr_temp_buffer( cstri, len );
CSTR_MEMCPY( temp, a, len_a );
CSTR_MEMCPY( temp + len_a, b, len_b );
return internal_cstr_insert( cstri, temp, len );
}
char const* cstri_vformat( struct cstri_t* cstri, char const* format, CSTR_VA_LIST_T args ) {
if( !format ) {
return internal_cstr_insert( cstri, "", 0 );
}
int size = CSTR_VSNPRINTF( cstri->temp_buffer, cstri->temp_capacity, format, args );
if( size < 0 ) {
return NULL;
}
if( (CSTR_SIZE_T) size >= cstri->temp_capacity ) {
internal_cstr_temp_buffer( cstri, size + 1u );
CSTR_VSNPRINTF( cstri->temp_buffer, cstri->temp_capacity, format, args );
}
return internal_cstr_insert( cstri, cstri->temp_buffer, (CSTR_SIZE_T)size );
}
char const* cstri_format( struct cstri_t* cstri, char const* format, ... ) {
if( !format ) {
return internal_cstr_insert( cstri, "", 0 );
}
CSTR_VA_LIST_T args;
va_start( args, format );
char const* ret = cstri_vformat( cstri, format, args );
va_end( args );
return ret;
}
char const* cstri_trim( struct cstri_t* cstri, char const* str ) {
if( !str ) {
return internal_cstr_insert( cstri, "", 0 );
}
char const* start = str;
char const* end = str + cstri_len( cstri, str );
while( start < end && isspace( *start ) ) {
++start;
}
while( end > start && isspace( *( end - 1 ) ) ) {
--end;
}
return internal_cstr_insert( cstri, start, (CSTR_SIZE_T)( end - start ) );
}
char const* cstri_ltrim( struct cstri_t* cstri, char const* str ) {
if( !str ) {
return internal_cstr_insert( cstri, "", 0 );
}
char const* start = str;
char const* end = str + cstri_len( cstri, str );
while( start < end && isspace( *start ) ) {
++start;
}
return internal_cstr_insert( cstri, start, (CSTR_SIZE_T)( end - start ) );
}
char const* cstri_rtrim( struct cstri_t* cstri, char const* str ) {
if( !str ) {
return internal_cstr_insert( cstri, "", 0 );
}
char const* start = str;
char const* end = str + cstri_len( cstri, str );
while( end > start && isspace( *( end - 1 ) ) ) {
--end;
}
return internal_cstr_insert( cstri, start, (CSTR_SIZE_T)( end - start ) );
}
char const* cstri_left( struct cstri_t* cstri, char const* str, size_t n ) {
if( !str ) {
return internal_cstr_insert( cstri, "", 0 );
}
CSTR_SIZE_T len = cstri_len( cstri, str );
if( len <= n ) {
return internal_cstr_insert( cstri, str, len );
}
return internal_cstr_insert( cstri, str, n );
}
char const* cstri_right( struct cstri_t* cstri, char const* str, size_t n ) {
if( !str ) {
return internal_cstr_insert( cstri, "", 0 );
}
CSTR_SIZE_T len = cstri_len( cstri, str );
if( len <= n ) {
return internal_cstr_insert( cstri, str, len );
}
return internal_cstr_insert( cstri, str + len - n, n );
}
char const* cstri_mid( struct cstri_t* cstri, char const* str, size_t start, size_t n ) {
if( !str ) {
return internal_cstr_insert( cstri, "", 0 );
}
CSTR_SIZE_T len = cstri_len( cstri, str );
if( len <= start ) {
return internal_cstr_insert( cstri, "", 0 );
}
if( len - start <= n ) {
return internal_cstr_insert( cstri, str + start, len - start );
}
return internal_cstr_insert( cstri, str + start, n );
}
char const* cstri_upper( struct cstri_t* cstri, char const* str ) {
if( !str ) {
return internal_cstr_insert( cstri, "", 0 );
}
CSTR_SIZE_T len = cstri_len( cstri, str );
char* temp = internal_cstr_temp_buffer( cstri, len );
for( CSTR_SIZE_T i = 0; i < len; ++i ) {
temp[ i ] = (char) CSTR_TOUPPER( str[ i ] );
}
return internal_cstr_insert( cstri, temp, len );
}
char const* cstri_lower( struct cstri_t* cstri, char const* str ) {
if( !str ) {
return internal_cstr_insert( cstri, "", 0 );
}
CSTR_SIZE_T len = cstri_len( cstri, str );
char* temp = internal_cstr_temp_buffer( cstri, len );
for( CSTR_SIZE_T i = 0; i < len; ++i ) {
temp[ i ] = (char) CSTR_TOLOWER( str[ i ] );
}
return internal_cstr_insert( cstri, temp, len );
}
#pragma warning( push )
#pragma warning( disable: 4100 )
char const* cstri_lpad( struct cstri_t* cstri, char const* str, char padding, CSTR_SIZE_T total_max_length ) {
return NULL; // todo
}
char const* cstri_rpad( struct cstri_t* cstri, char const* str, char padding, CSTR_SIZE_T total_max_length ) {
return NULL; // todo
}
char const* cstri_join( struct cstri_t* cstri, char const* a, char const* b, char const* separator ) {
return NULL; // todo
}
char const* cstri_replace( struct cstri_t* cstri, char const* str, char const* find, char const* replacement ) {
return NULL; // todo
}
char const* cstri_insert( struct cstri_t* cstri, char const* str, int position, char const* insertion ) {
return NULL; // todo
}
char const* cstri_remove( struct cstri_t* cstri, char const* str, int start, int length ) {
return NULL; // todo
}
#pragma warning( pop )
char const* cstri_int( struct cstri_t* cstri, int i ) {
return cstri_format( cstri, "%d", i );
}
char const* cstri_float( struct cstri_t* cstri, float f ) {
return cstri_format( cstri, "%f", f );
}
CSTR_BOOL_T cstri_starts( struct cstri_t* cstri, char const* str, char const* start ) {
CSTR_SIZE_T str_len = cstri_len( cstri, str );
CSTR_SIZE_T start_len = cstri_len( cstri, start );
return str_len >= start_len && CSTR_MEMCMP( str, start, start_len ) == 0;
}
CSTR_BOOL_T cstri_ends( struct cstri_t* cstri, char const* str, char const* end ) {
CSTR_SIZE_T str_len = cstri_len( cstri, str );
CSTR_SIZE_T end_len = cstri_len( cstri, end );
return str_len >= end_len && CSTR_MEMCMP( str + str_len - end_len, end, end_len ) == 0;
}
CSTR_BOOL_T cstri_is_equal( struct cstri_t* cstri, char const* a, char const* b ) {
if( a == b ) {
return 1;
}
CSTR_SIZE_T len_a = cstri_len( cstri, a );
CSTR_SIZE_T len_b = cstri_len( cstri, b );
if( len_a != len_b ) {
return 0;
}
return CSTR_MEMCMP( a, b, len_a ) == 0;
}
int cstri_compare( struct cstri_t* cstri, char const* a, char const* b ) {
if( a == b ) {
return 0;
}
CSTR_SIZE_T len_a = cstri_len( cstri, a );
CSTR_SIZE_T len_b = cstri_len( cstri, b );
CSTR_SIZE_T min_len = len_a < len_b ? len_a : len_b;
return CSTR_MEMCMP( a ? a : "", b ? b : "", min_len + 1 );
}
int cstri_compare_nocase( struct cstri_t* cstri, char const* a, char const* b ) {
if( a == b ) {
return 0;
}
CSTR_SIZE_T len_a = cstri_len( cstri, a );
CSTR_SIZE_T len_b = cstri_len( cstri, b );
CSTR_SIZE_T min_len = len_a < len_b ? len_a : len_b;
return CSTR_STRNICMP( a ? a : "", b ? b : "", min_len + 1 );
}
int cstri_find( struct cstri_t* cstri, char const* str, char const* find, int start ) {
if( !str || !find || start < 0) {
return -1;
}
CSTR_SIZE_T len = cstri_len( cstri, str );
if( (CSTR_SIZE_T)start >= len ) {
return -1;
}
char const* res = CSTR_STRSTR( str + start, find );
if( !res ) {
return -1;
}
return (int)( res - str );
}
int cstri_rfind( struct cstri_t* cstri, char const* str, char const* find, int start ) {
(void) cstri, str, find, start;
// todo
return -1;
}
CSTR_U32 cstri_hash( struct cstri_t* cstri, char const* str ) {
struct cstr_slot_t* slot = internal_cstr_interned( cstri, str );
if( slot ) {
return slot->hash;
} else {
return internal_cstr_hash( str ? str : "", str ? CSTR_STRLEN( str ) : 0 );
}
}
struct cstr_tokenizer_t cstri_tokenizer( struct cstri_t* cstri, char const* str ) {
struct cstr_tokenizer_t tokenizer;
tokenizer.internal = (void*)internal_cstr_insert( cstri, str, str ? CSTR_STRLEN( str ) : 0 );
return tokenizer;
}
char const* cstri_tokenize( struct cstri_t* cstri, struct cstr_tokenizer_t* tokenizer, char const* separators ) {
CSTR_SIZE_T sep_len = cstr_len( separators );
char const* pos = (char const*) tokenizer->internal;
// strip leading separators
while( *pos ) {
char ch = *pos;
CSTR_BOOL_T is_sep = 0;
for( CSTR_SIZE_T i = 0; i < sep_len; ++i ) {
if( ch == separators[ i ] ) {
is_sep = 1;
break;
}
}
if( !is_sep ) break;
++pos;
}
// find next separator
char const* token = pos;
while( *pos ) {
char ch = *pos;
CSTR_BOOL_T is_sep = 0;
for( CSTR_SIZE_T i = 0; i < sep_len; ++i ) {
if( ch == separators[ i ] ) {
is_sep = 1;
break;
}
}
if( is_sep ) break;
++pos;
}
tokenizer->internal = (void*) pos;
// no more tokens?
if( *token == '\0' ) {
return NULL;
}
// return the token
return internal_cstr_insert( cstri, token, (CSTR_SIZE_T)( pos - token ) );
}
//// global api
#ifndef CSTR_NO_GLOBAL_API
static struct cstri_t* g_internal_cstr = NULL;
void internal_cstr_cleanup( void ) {
if( g_internal_cstr ) {
cstri_destroy( g_internal_cstr );
g_internal_cstr = NULL;
}
}
static void internal_cstr_instance( void ) {
if( !g_internal_cstr ) {
g_internal_cstr = cstri_create( NULL );
static int atexit_set = 0;
if( !atexit_set ) {
atexit( internal_cstr_cleanup );
atexit_set = 1;
}
}
}
void cstr_reset( void ) {
CSTR_MUTEX_LOCK();
internal_cstr_cleanup();
CSTR_MUTEX_UNLOCK();
}
struct cstr_restore_point_t* cstr_restore_point( void ) {
CSTR_MUTEX_LOCK();
if( !g_internal_cstr ) internal_cstr_instance();
struct cstr_restore_point_t* ret = cstri_restore_point( g_internal_cstr );
CSTR_MUTEX_UNLOCK();
return ret;
}
void cstr_rollback( struct cstr_restore_point_t* restore_point ) {
CSTR_MUTEX_LOCK();
if( !g_internal_cstr ) internal_cstr_instance();
cstri_rollback( g_internal_cstr, restore_point );
CSTR_MUTEX_UNLOCK();
}
char const* cstr( char const* str ) {
CSTR_MUTEX_LOCK();
if( !g_internal_cstr ) internal_cstr_instance();
char const* ret = cstri( g_internal_cstr, str );
CSTR_MUTEX_UNLOCK();
return ret;
}
char const* cstr_n( char const* str, CSTR_SIZE_T n ) {
CSTR_MUTEX_LOCK();
if( !g_internal_cstr ) internal_cstr_instance();
char const* ret = cstri_n( g_internal_cstr, str, n );