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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <ctype.h> | ||
| #include <inttypes.h> | ||
| #include <string.h> | ||
| #include <assert.h> | ||
| #ifdef WIN32 | ||
| # include <WinSock2.h> | ||
| # include <Windows.h> | ||
| #else | ||
| # include <unistd.h> | ||
| #endif | ||
|
|
||
| #include "cache.h" | ||
| #include "pcs/pcs_mem.h" | ||
|
|
||
| #ifdef WIN32 | ||
| #ifndef __MINGW32__ | ||
| # define lseek _lseek | ||
| # define fileno _fileno | ||
| # define fseeko _fseeki64 | ||
| # define ftello _ftelli64 | ||
| #endif | ||
| #endif | ||
|
|
||
| int cache_init(cathe_t *cache) | ||
| { | ||
| memset(cache, 0, sizeof(cathe_t)); | ||
| cache->blocks.prev = &cache->blocks; | ||
| cache->blocks.next = &cache->blocks; | ||
| return 0; | ||
| } | ||
|
|
||
| void cache_uninit(cathe_t *cache) | ||
| { | ||
| if (cache) { | ||
| block_t *block = cache->blocks.next, *tmp; | ||
| while (block != &cache->blocks) { | ||
| tmp = block; | ||
| block = block->next; | ||
| pcs_free(tmp->data); | ||
| pcs_free(tmp); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| int cache_reset(cathe_t *cache) | ||
| { | ||
| cache_uninit(cache); | ||
| cache->blocks.prev = &cache->blocks; | ||
| cache->blocks.next = &cache->blocks; | ||
| cache->total_size = 0; | ||
| return 0; | ||
| } | ||
|
|
||
| block_t *cache_newblock(curl_off_t start, char *data, size_t size) | ||
| { | ||
| block_t *block; | ||
| block = pcs_malloc(sizeof(block_t)); | ||
| if (!block) | ||
| return NULL; | ||
| memset(block, 0, sizeof(block_t)); | ||
| block->start = start; | ||
| block->size = size; | ||
| block->data = pcs_malloc(size); | ||
| if (!block->data) { | ||
| free(block); | ||
| return NULL; | ||
| } | ||
| memcpy(block->data, data, size); | ||
| return block; | ||
| } | ||
|
|
||
| int cache_addblock(cathe_t *cache, block_t *block) | ||
| { | ||
| block_t *pos = cache->blocks.next; | ||
| cache->total_size += block->size; | ||
| /* find position */ | ||
| while (pos != &cache->blocks) { | ||
| if (pos->start > block->start) | ||
| break; | ||
| pos = pos->next; | ||
| } | ||
| block->next = pos; | ||
| block->prev = pos->prev; | ||
| pos->prev->next = block; | ||
| pos->prev = block; | ||
| return 0; | ||
| } | ||
|
|
||
| int cache_add(cathe_t *cache, curl_off_t start, char *data, size_t size) | ||
| { | ||
| block_t *block, *pos = cache->blocks.next; | ||
| block = cache_newblock(start, data, size); | ||
| if (!block) | ||
| return -1; | ||
| return cache_addblock(cache, block); | ||
| } | ||
|
|
||
| int cache_flush(cathe_t *cache) | ||
| { | ||
| block_t *block = cache->blocks.next; | ||
| int r; | ||
| while (block != &cache->blocks) { | ||
| r = fseeko((cache->fp), block->start, SEEK_SET); | ||
| if (r) | ||
| return -1; | ||
| r = fwrite(block->data, 1, block->size, cache->fp); | ||
| if (r != block->size) | ||
| return -1; | ||
| block = block->next; | ||
| } | ||
| return 0; | ||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| #ifndef _PCS_SHELL_CAHCE_H | ||
| #define _PCS_SHELL_CAHCE_H | ||
|
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| #include "pcs/pcs.h" | ||
|
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| #ifndef MAX_CACHE_SIZE | ||
| #define MAX_CACHE_SIZE (1 * 1024) /* 1MiB */ | ||
| #endif | ||
|
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| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
|
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| typedef struct block { | ||
| curl_off_t start; | ||
| size_t size; | ||
| char *data; | ||
| struct block *prev; | ||
| struct block *next; | ||
| } block_t; | ||
|
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| typedef struct cache { | ||
| block_t blocks; | ||
| FILE *fp; | ||
| size_t total_size; | ||
| } cathe_t; | ||
|
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| int cache_init(cathe_t *cache); | ||
|
|
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| void cache_uninit(cathe_t *cache); | ||
|
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| int cache_add(cathe_t *cache, curl_off_t start, char *data, size_t size); | ||
|
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| int cache_flush(cathe_t *cache); | ||
|
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| int cache_reset(cathe_t *cache); | ||
|
|
||
| #ifdef __cplusplus | ||
| } | ||
| #endif | ||
|
|
||
| #endif |
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