mirror of
https://github.com/fumiama/fumidb.git
synced 2026-06-06 17:20:33 +08:00
add more api
This commit is contained in:
@@ -11,7 +11,7 @@
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// 返回:
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// NULL 失败,详见 errno
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// table 指向表头的指针
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void* create_table(int fd, char* buf, const char* name, int row_len, ...);
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void* create_table(int fd, char* buf, const char* name, int row_len, const void* list);
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// 加载 ptr 位置的表
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// len(buf) >= 4096+8+2=4106
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@@ -54,7 +54,7 @@ int remove_table_index(int fd, void* table, uint16_t pos);
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// 返回:
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// 0 失败,详见 errno
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// ptr 本行插入的位置
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uint64_t insert_row(int fd, void* table, int row_len, ...);
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uint64_t insert_row(int fd, void* table, int row_len, const void* list);
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// 根据主键的匹配值查找行
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// 如果主键不为 string,k 直接装填其值
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@@ -72,7 +72,7 @@ uint64_t find_row_by_pk(int fd, void* table, key_t k);
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// 返回:
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// 非 0 失败,详见 errno
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// 0 成功
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int find_row_by(int fd, void* table, int (*f)(uint64_t), int row_len, ...);
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int find_row_by(int fd, void* table, int (*f)(uint64_t), int row_len, const void* list);
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// 根据主键的匹配值删除行
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// 如果主键不为 string,k 直接装填其值
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@@ -89,6 +89,6 @@ int remove_row_by_pk(int fd, void* table, key_t k);
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// 返回:
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// 非 0 失败,详见 errno
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// 0 成功
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int remove_row_by(int fd, void* table, int row_len, ...);
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int remove_row_by(int fd, void* table, int row_len, const void* list);
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#endif
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@@ -4,23 +4,23 @@
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#include <stdint.h>
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#include <errno.h>
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#define TYPE_INT8 ((uint8_t)0)
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#define TYPE_INT16 ((uint8_t)1)
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#define TYPE_INT32 ((uint8_t)2)
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#define TYPE_INT64 ((uint8_t)3)
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#define TYPE_FLOAT ((uint8_t)4)
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#define TYPE_DOUBLE ((uint8_t)5)
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#define TYPE_STRING ((uint8_t)6)
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#define TYPE_BINARY ((uint8_t)7)
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#define EXTYPE_NULL ((uint8_t)0x00)
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#define EXTYPE_UNIQUE ((uint8_t)0x40)
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#define EXTYPE_NONNULL ((uint8_t)0x80)
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#define EXTYPE_FOREIGNKEY ((uint8_t)0xc0)
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typedef uint8_t type_t;
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typedef uint64_t key_t;
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#define TYPE_INT8 ((type_t)0)
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#define TYPE_INT16 ((type_t)1)
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#define TYPE_INT32 ((type_t)2)
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#define TYPE_INT64 ((type_t)3)
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#define TYPE_FLOAT ((type_t)4)
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#define TYPE_DOUBLE ((type_t)5)
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#define TYPE_STRING ((type_t)6)
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#define TYPE_BINARY ((type_t)7)
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#define EXTYPE_NULL ((type_t)0x00)
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#define EXTYPE_UNIQUE ((type_t)0x10)
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#define EXTYPE_NONNULL ((type_t)0x20)
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#define EXTYPE_FOREIGNKEY ((type_t)0x40)
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// 获得本类型 index 相对于 buffer 头的偏移
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int type_offset(type_t t);
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36
src/table.c
36
src/table.c
@@ -82,7 +82,7 @@ static int _remove_index_type(int fd, type_t t, uint64_t ptr) {
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// 返回:
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// NULL 失败,详见 errno
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// table 指向表头的指针
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void* create_table(int fd, char* buf, const char* name, int row_len, ...) {
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void* create_table(int fd, char* buf, const char* name, int row_len, const void* list) {
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if(row_len <= 0 || row_len > 128) {
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errno = EINVAL;
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return NULL;
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@@ -111,34 +111,44 @@ void* create_table(int fd, char* buf, const char* name, int row_len, ...) {
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putle16(table+len, row_len);
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len += 2;
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int foreign_cnt = 0;
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va_list list;
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va_start(list, row_len);
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int foreign_cnt = 0, ap = 0;
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type_t t = va_arg(list, int); // 是主键,检查是否有 unique + nonnull 类型修饰符
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type_t t = ((type_t*)list)[ap++]; // 是主键,检查是否有 unique + nonnull 类型修饰符
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if(!(t&EXTYPE_NONNULL) || !(t&EXTYPE_UNIQUE)) {
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errno = EINVAL;
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return NULL;
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}
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((type_t*)table)[len] = t; // 填充 type of row No.0
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#ifdef DEBUG
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printf("fill[%d]: %d\n", ap, t);
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#endif
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if(t & EXTYPE_FOREIGNKEY) { // 是外键,还有一个参数
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ptr = va_arg(list, uint64_t);
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ptr = ((uint64_t*)list)[ap];
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#ifdef DEBUG
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printf("fill[%d]: %016llx\n", ap, ptr);
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#endif
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ap += 8;
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putle64(table+len+(int)row_len*(8+1)+8*(foreign_cnt++), ptr);
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}
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// 为 pk 创建索引
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if(_add_index_type(fd, table+len+(int)row_len, t)) return NULL;
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for(int i = 1; i < (int)row_len; i++) {
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t = va_arg(list, int);
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t = ((type_t*)list)[ap++];
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((type_t*)table)[len+i] = t; // 填充 type of row No.i
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#ifdef DEBUG
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printf("fill[%d]: %d\n", ap, t);
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#endif
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if(t & EXTYPE_FOREIGNKEY) { // 是外键,还有一个参数
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ptr = va_arg(list, uint64_t);
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ptr = ((uint64_t*)list)[ap];
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#ifdef DEBUG
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printf("fill[%d]: %016llx\n", ap, ptr);
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#endif
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ap += 8;
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putle64(table+len+(int)row_len*(8+1)+8*(foreign_cnt++), ptr);
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}
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}
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va_end(list);
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len += (int)row_len*(8+1) + 8*foreign_cnt;
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if(len > PAGESZ) {
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errno = EFBIG;
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@@ -274,7 +284,7 @@ int remove_table_index(int fd, void* table, uint16_t pos) {
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// 返回:
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// 0 失败,详见 errno
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// ptr 本行插入的位置
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uint64_t insert_row(int fd, void* table, int row_len, ...) {
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uint64_t insert_row(int fd, void* table, int row_len, const void* list) {
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return 0;
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}
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@@ -296,7 +306,7 @@ uint64_t find_row_by_pk(int fd, void* table, key_t k) {
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// 返回:
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// 非 0 失败,详见 errno
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// 0 成功
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int find_row_by(int fd, void* table, int (*f)(uint64_t), int row_len, ...) {
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int find_row_by(int fd, void* table, int (*f)(uint64_t), int row_len, const void* list) {
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return 1;
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}
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@@ -317,6 +327,6 @@ int remove_row_by_pk(int fd, void* table, key_t k) {
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// 返回:
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// 非 0 失败,详见 errno
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// 0 成功
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int remove_row_by(int fd, void* table, int row_len, ...) {
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int remove_row_by(int fd, void* table, int row_len, const void* list) {
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return 1;
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}
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@@ -18,12 +18,13 @@ int main() {
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}
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if(init_file_header_page(fd)) return 2;
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void* table = create_table(
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fd, buf, "test_table", 5,
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TYPE_INT16|EXTYPE_NONNULL|EXTYPE_UNIQUE,
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TYPE_INT64,
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TYPE_INT8,
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TYPE_STRING,
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TYPE_BINARY
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fd, buf, "test_table", 5, (type_t[]){
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TYPE_INT16|EXTYPE_NONNULL|EXTYPE_UNIQUE,
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TYPE_INT64,
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TYPE_INT8,
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TYPE_STRING,
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TYPE_BINARY
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}
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);
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if(table == NULL) {
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perror("create_table");
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