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-rw-r--r--io/param.c305
1 files changed, 0 insertions, 305 deletions
diff --git a/io/param.c b/io/param.c
deleted file mode 100644
index a57b183..0000000
--- a/io/param.c
+++ /dev/null
@@ -1,305 +0,0 @@
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-#include "../common.h"
-#include "param.h"
-
-#define INVALID_FORMAT_ERROR(fn) \
- nerv_error(L, "Invalid param file: %s", fn)
-#define CHECK_FORMAT(exp, ret, fname) \
- do { \
- if ((exp) != (ret)) INVALID_FORMAT_ERROR(fn); \
- } while (0)
-
-const char *nerv_param_file_tname = "nerv.ParamFile";
-const char *nerv_param_file_handle_tname = "nerv.ParamFileHandle";
-const char *nerv_param_chunk_info_tname = "nerv.ParamChunkInfo";
-const char *nerv_param_chunk_data_tname = "nerv.ParamChunkData";
-
-#define PARAM_HEADER_SIZE 16
-
-enum {
- NORMAL,
- INVALID_FORMAT,
- END_OF_FILE,
- SECTION_OVERFLOW,
- WRITE_ERROR
-};
-
-size_t read_param_header_plain(FILE *fp, int *status) {
- static char buff[PARAM_HEADER_SIZE];
- int i;
- size_t size = 0;
- *status = NORMAL;
- if (fread(buff, 1, PARAM_HEADER_SIZE, fp) != PARAM_HEADER_SIZE)
- {
- if (feof(fp)) *status = END_OF_FILE;
- else *status = INVALID_FORMAT;
- }
- for (i = 0; i < PARAM_HEADER_SIZE; i++)
- if (isdigit(buff[i]))
- size = size * 10 + buff[i] - '0';
- fprintf(stderr, "header: %lu\n", size);
- return size;
-}
-
-#define CHECK_WRITE(status) \
- do { \
- if (status == SECTION_OVERFLOW) \
- nerv_error(L, "section overflowed"); \
- else if (status == WRITE_ERROR) \
- nerv_error(L, "error while writing"); \
- } while (0)
-
-void write_param_header_plain(FILE *fp, size_t size, int *status) {
- static char buff[PARAM_HEADER_SIZE];
- int i;
- *status = NORMAL;
- for (i = PARAM_HEADER_SIZE - 3; i > 0; i--, size /= 10)
- buff[i] = size % 10 + '0';
- if (size)
- {
- *status = SECTION_OVERFLOW;
- return;
- }
- buff[0] = '[';
- buff[PARAM_HEADER_SIZE - 2] = ']';
- buff[PARAM_HEADER_SIZE - 1] = '\n';
- if (fwrite(buff, 1, PARAM_HEADER_SIZE, fp) != PARAM_HEADER_SIZE)
- {
- *status = WRITE_ERROR;
- return;
- }
-}
-
-ParamChunkData *get_param_chunk_data(FILE *fp, ParamChunkInfo *info) {
- ParamChunkData *pcd = (ParamChunkData *)malloc(sizeof(ParamChunkData));
- pcd->data = (char *)malloc(info->length);
- pcd->fp = fmemopen(pcd->data, info->length, "r");
- assert(fseeko(fp, info->offset, SEEK_SET) == 0);
- if (fread(pcd->data, 1, info->length, fp) != (size_t)info->length)
- return NULL;
- return pcd;
-}
-
-const char *read_param_metadata(lua_State *L, FILE *fp, const char *fn) {
-#define LINEBUFF_SIZE 1024
- static char buff[7 + LINEBUFF_SIZE] = "return ";
- CHECK_FORMAT(fgets(buff + 7, LINEBUFF_SIZE, fp), buff + 7, fn);
- fprintf(stderr, "metadata: %s\n", buff);
- return buff;
-}
-
-void write_param_metadata(FILE *fp, const char *metadata_str, int *status) {
- size_t size = strlen(metadata_str);
- *status = NORMAL;
- if (fwrite(metadata_str, 1, size, fp) != size ||
- fprintf(fp, "\n") < 0)
- {
- *status = WRITE_ERROR;
- return;
- }
- fprintf(stderr, "metadata: %s\n", metadata_str);
-}
-
-
-int nerv_param_file_open_write(lua_State *L, const char *fn) {
- FILE *fp = fopen(fn, "w");
- ParamFileHandle *lfp;
- if (!fp) nerv_error(L, "Error while opening param file: %s", fn);
- lfp = (ParamFileHandle *)malloc(sizeof(ParamFileHandle));
- lfp->fp = fp;
- luaT_pushudata(L, lfp, nerv_param_file_handle_tname);
- lua_setfield(L, -2, "handle");
- luaT_pushmetatable(L, nerv_param_file_tname);
- lua_setmetatable(L, -2);
- return 1;
-}
-
-int nerv_param_file_open_read(lua_State *L, const char *fn) {
- FILE *fp = fopen(fn, "r");
- int i, status;
- size_t param_len;
- off_t offset;
- ParamFileHandle *lfp;
-
- if (!fp) nerv_error(L, "Error while opening param file: %s", fn);
- offset = ftello(fp);
- lua_newtable(L);
- fprintf(stderr, "%d\n", (int)offset);
- for (i = 0;; offset += param_len, i++)
- {
- ParamChunkInfo *pci;
- fprintf(stderr, "reading param chunk %d from %d\n", i, (int)offset);
- /* skip to the begining of param chunk i */
- CHECK_FORMAT(fseeko(fp, offset, SEEK_SET), 0, fn);
- /* read header */
- param_len = read_param_header_plain(fp, &status);
- if (status == END_OF_FILE) break;
- else if (status == INVALID_FORMAT)
- INVALID_FORMAT_ERROR(fn);
- /* read metadata */
- luaL_loadstring(L, read_param_metadata(L, fp, fn));
- CHECK_FORMAT(lua_pcall(L, 0, 1, 0), 0, fn);
- CHECK_FORMAT(lua_istable(L, -1), 1, fn);
- /* stack: obj_table, metadata */
- /* chunk info */
- pci = (ParamChunkInfo *)malloc(sizeof(ParamChunkInfo));
- pci->offset = ftello(fp);
- pci->length = param_len - (pci->offset - offset);
- fprintf(stderr, "%d + %d (skip %lu)\n", (int)pci->offset,
- (int)pci->length, param_len);
- luaT_pushudata(L, pci, nerv_param_chunk_info_tname);
- lua_setfield(L, -2, "chunk");
- /* stack: obj_table, metadata */
- /* get id */
- lua_getfield(L, -1, "id");
- /* stack: obj_table, metadata, id */
- if (!lua_isstring(L, -1))
- nerv_error(L, "id field in metadata must be a string");
- lua_pushvalue(L, -1);
- /* stack: obj_table, metadata, id, id */
- lua_gettable(L, -4);
- /* stack: obj_table, metadata, id, obj[id] */
- if (!lua_isnil(L, -1))
- nerv_error(L, "conflicting id");
- lua_pop(L, 1);
- /* stack: obj_table, metadata, id */
- lua_pushvalue(L, -2);
- /* stack: obj_table, metadata, id, metadata */
- lua_settable(L, -4);
- /* stack: obj_table, metadata */
- lua_pop(L, 1);
- }
- lua_setfield(L, -2, "metadata");
- lfp = (ParamFileHandle *)malloc(sizeof(ParamFileHandle));
- lfp->fp = fp;
- luaT_pushudata(L, lfp, nerv_param_file_handle_tname);
- lua_setfield(L, -2, "handle");
- luaT_pushmetatable(L, nerv_param_file_tname);
- lua_setmetatable(L, -2);
- return 1;
-}
-
-int nerv_param_file_new_(lua_State *L, const char *fn, const char *mode) {
- int rd = 1, bin = 0;
- size_t i, len = strlen(mode);
- for (i = 0; i < len; i++)
- switch (mode[i])
- {
- case 'r': rd = 1; break;
- case 'w': rd = 0; break;
- case 'b': bin = 1; break;
- }
- return rd ? nerv_param_file_open_read(L, fn) : \
- nerv_param_file_open_write(L, fn);
-}
-
-int nerv_param_file___init(lua_State *L) {
- lua_pushvalue(L, 1);
- return nerv_param_file_new_(L, luaL_checkstring(L, 2),
- luaL_checkstring(L, 3));
-}
-
-int nerv_param_file_new(lua_State *L) {
- lua_newtable(L);
- return nerv_param_file_new_(L, luaL_checkstring(L, 1),
- luaL_checkstring(L, 2));
-}
-
-int nerv_param_file_write_chunkdata(lua_State *L) {
- ParamFileHandle *pfh;
- int status;
- off_t start;
- size_t size;
- const char *metadata_str = lua_tolstring(L, 2, NULL);
- lua_getfield(L, 1, "handle");
- pfh = luaT_checkudata(L, -1, nerv_param_file_handle_tname);
- start = ftello(pfh->fp);
- write_param_header_plain(pfh->fp, 0, &status); /* fill zeros */
- CHECK_WRITE(status);
- write_param_metadata(pfh->fp, metadata_str, &status);
- CHECK_WRITE(status);
- lua_pushvalue(L, 3);
- lua_getfield(L, -1, "write");
- if (!lua_isfunction(L, -1))
- nerv_error(L, "\"write\" method must be implemented");
- lua_pushvalue(L, -2);
- lua_pushvalue(L, 4); /* pass handle as parameter to write() */
- lua_call(L, 2, 0); /* let the write() to write */
- lua_pop(L, 1);
- size = ftello(pfh->fp) - start;
- fseeko(pfh->fp, start, SEEK_SET);
- /* write the calced size */
- write_param_header_plain(pfh->fp, size, &status);
- CHECK_WRITE(status);
- fseeko(pfh->fp, 0, SEEK_END);
- return 0;
-}
-
-int nerv_param_file_get_chunkdata(lua_State *L) {
- ParamFileHandle *pfh;
- ParamChunkInfo *pci;
- ParamChunkData *pcd;
- const char *id = luaL_checkstring(L, 2);
-
- lua_getfield(L, 1, "handle");
- pfh = luaT_checkudata(L, -1, nerv_param_file_handle_tname);
- lua_pop(L, 1); /* pop handle */
- lua_getfield(L, 1, "metadata");
- /* now stack: self, k, metadata */
- lua_getfield(L, -1, id);
- /* now stack: self, k, metadata, kth{} */
- if (lua_isnil(L, -1)) /* no chunck with the id */
- return 0;
- lua_getfield(L, -1, "chunk");
- pci = luaT_checkudata(L, -1, nerv_param_chunk_info_tname);
- if (!(pcd = get_param_chunk_data(pfh->fp, pci)))
- nerv_error(L, "unexpected end of file");
- luaT_pushudata(L, pcd, nerv_param_chunk_data_tname);
- return 1;
-}
-
-int nerv_param_file_handle_destroy(lua_State *L) {
- ParamFileHandle *pfh = luaT_checkudata(L, 1,
- nerv_param_file_handle_tname);
- fclose(pfh->fp);
- free(pfh);
- return 0;
-}
-
-static int nerv_param_chunk_destroy(lua_State *L) {
- ParamChunkInfo *pci = luaT_checkudata(L, 1, nerv_param_chunk_info_tname);
- free(pci);
- return 0;
-}
-
-static int nerv_param_chunk_data_destroy(lua_State *L) {
- ParamChunkData *pcd = luaT_checkudata(L, 1, nerv_param_chunk_data_tname);
- fclose(pcd->fp);
- free(pcd->data);
- free(pcd);
- return 0;
-}
-
-static const luaL_Reg nerv_param_file_methods[] = {
- {"get_chunkdata", nerv_param_file_get_chunkdata},
- {"_write_chunkdata", nerv_param_file_write_chunkdata},
- {"__init", nerv_param_file___init},
- {NULL, NULL}
-};
-
-void nerv_param_file_init(lua_State *L) {
- luaT_newmetatable(L, nerv_param_file_tname, NULL,
- nerv_param_file_new,
- NULL, NULL);
- luaL_register(L, NULL, nerv_param_file_methods);
- lua_pop(L, 1);
- luaT_newmetatable(L, nerv_param_file_handle_tname, NULL,
- NULL, nerv_param_file_handle_destroy, NULL);
- luaT_newmetatable(L, nerv_param_chunk_info_tname, NULL,
- NULL, nerv_param_chunk_destroy, NULL);
- luaT_newmetatable(L, nerv_param_chunk_data_tname, NULL,
- NULL, nerv_param_chunk_data_destroy, NULL);
-}
-
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