svn -> git Migration

2026-05-31 00:46:46 +00:00 · 2013-02-16 16:14:39 -08:00
parent 88c9715fb0
commit da7347f76f
1174 changed files with 445622 additions and 0 deletions
@@ -0,0 +1,136 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <zlib.h>
+
+#include "s3d.h"
+
+void decompress(char *p, char *p2, int len, int uLen) {
+  int status;
+  z_stream d_stream;
+
+  d_stream.zalloc = (alloc_func)0;
+  d_stream.zfree = (free_func)0;
+  d_stream.opaque = (voidpf)0;
+  
+  d_stream.next_in  = p;
+  d_stream.avail_in = len;
+  d_stream.next_out = p2;
+  d_stream.avail_out = uLen;
+  
+  inflateInit(&d_stream);
+  status = inflate(&d_stream, Z_NO_FLUSH);
+  inflateEnd(&d_stream);
+}
+
+int S3D_Init(s3d_object *obj, FILE *fp) {
+  struct_header s3d_header;
+  struct_directory_header s3d_dir_header;
+  struct_directory s3d_dir;
+  struct_data_block s3d_data;
+  struct_fn_header *s3d_fn_header;
+  struct_fn_entry *s3d_fn_entry;
+
+  uint32 *offsets;
+  
+  char *temp, *temp2;
+  int i, j, pos, inf, tmp, running = 0;
+
+  obj->fp = fp;
+  
+  fread(&s3d_header, sizeof(struct_header), 1, fp);
+  if(s3d_header.magicCookie[0] != 'P' || s3d_header.magicCookie[1] != 'F' || s3d_header.magicCookie[2] != 'S' || s3d_header.magicCookie[3] != ' ')
+    return -1;
+  fseek(fp, s3d_header.offset, SEEK_SET);
+  fread(&s3d_dir_header, sizeof(struct_directory_header), 1, fp);
+  
+  obj->count = s3d_dir_header.count;
+  obj->filenames = (char **) malloc(s3d_dir_header.count * sizeof(char *));
+  obj->files = (uint32 *) malloc((s3d_dir_header.count - 1) * sizeof(uint32));
+  offsets = (uint32 *) malloc((s3d_dir_header.count - 1) * sizeof(uint32));
+
+  for(i = 0; i < s3d_dir_header.count; ++i) {
+    fread(&s3d_dir, sizeof(struct_directory), 1, fp);
+
+    if(s3d_dir.crc == 0x61580AC9) {
+      pos = ftell(fp);
+      fseek(fp, s3d_dir.offset, SEEK_SET);
+      temp = (char *) malloc(s3d_dir.size);
+      memset(temp, 0, s3d_dir.size);
+      inf = 0;
+      while(inf < s3d_dir.size) {
+        fread(&s3d_data, sizeof(struct_data_block), 1, fp);
+        temp2 = (char *) malloc(s3d_data.deflen);
+        fread(temp2, s3d_data.deflen, 1, fp);
+        decompress(temp2, temp + inf, s3d_data.deflen, s3d_data.inflen);
+        free(temp2);
+        inf += s3d_data.inflen;
+      }
+      fseek(fp, pos, SEEK_SET);
+      s3d_fn_header = (struct_fn_header *) temp;
+      pos = sizeof(struct_fn_header);
+      for(j = 0; j < s3d_fn_header->fncount; ++j) {
+        s3d_fn_entry = (struct_fn_entry *) &temp[pos];
+        obj->filenames[j] = (char *) malloc(s3d_fn_entry->fnlen + 1);
+        obj->filenames[j][s3d_fn_entry->fnlen] = 0;
+        memcpy(obj->filenames[j], &temp[pos + sizeof(struct_fn_entry)], s3d_fn_entry->fnlen);
+        pos += sizeof(struct_fn_entry) + s3d_fn_entry->fnlen;
+      }
+    }
+
+    else {
+      obj->files[running] = ftell(fp) - 12;
+      offsets[running] = s3d_dir.offset;
+      ++running;
+    }
+
+  }
+
+  for(i = s3d_dir_header.count - 2; i > 0; i--) {
+    for(j = 0; j < i; j++) {
+      if(offsets[j] > offsets[j+1]) {
+        tmp = offsets[j];
+        offsets[j] = offsets[j + 1];
+        offsets[j + 1] = tmp;
+        tmp = obj->files[j];
+        obj->files[j] = obj->files[j + 1];
+        obj->files[j + 1] = tmp;
+      }
+    }
+  }
+
+  return 0;
+}
+
+size_t S3D_GetFile(s3d_object *obj, char *filename, uchar **out) {
+  struct_directory s3d_dir;
+  struct_data_block s3d_data;
+  uchar *buf;
+  char *temp2;
+  long inf;
+  int i;
+
+  for(i = 0; i < obj->count; ++i) {
+    if(!strcmp(obj->filenames[i], filename)) {
+      fseek(obj->fp, obj->files[i], SEEK_SET);
+      fread(&s3d_dir, sizeof(struct_directory), 1, obj->fp);
+      fseek(obj->fp, s3d_dir.offset, SEEK_SET);
+      buf = (uchar *) malloc(s3d_dir.size);
+      
+      inf = 0;
+      while(inf < s3d_dir.size) {
+        fread(&s3d_data, sizeof(struct_data_block), 1, obj->fp);
+        temp2 = (char *) malloc(s3d_data.deflen);
+        fread(temp2, s3d_data.deflen, 1, obj->fp);
+        decompress(temp2, (char *) buf + inf, s3d_data.deflen, s3d_data.inflen);
+        free(temp2);
+        inf += s3d_data.inflen;
+      }
+      
+      *out = buf;
+      return inf;
+    }
+  }
+  return -1;
+}
+