Changes to support linking without a parser and without a disk I/O interface. (CVS 2504)

FossilOrigin-Name: 62a7353d4af4886b1561832e8b36e8e788b38834

1 files changed, 39 insertions, 40 deletions

diff --git a/src/os_unix.c b/src/os_unix.c
index b900331bd..9c361a171 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -20,6 +20,18 @@
 #include <time.h>
 #include <errno.h>
 #include <unistd.h>
+
+/*
+** Do not include any of the File I/O interface procedures if the
+** SQLITE_OMIT_DISKIO macro is defined (indicating that there database
+** will be in-memory only)
+*/
+#ifndef SQLITE_OMIT_DISKIO
+
+
+/*
+** Define various macros that are missing from some systems.
+*/
 #ifndef O_LARGEFILE
 # define O_LARGEFILE 0
 #endif
@@ -34,7 +46,6 @@
 # define O_BINARY 0
 #endif
 
-
 /*
 ** The DJGPP compiler environment looks mostly like Unix, but it
 ** lacks the fcntl() system call.  So redefine fcntl() to be something
@@ -1200,6 +1211,33 @@ int sqlite3OsClose(OsFile *id){
 }
 
 /*
+** Turn a relative pathname into a full pathname.  Return a pointer
+** to the full pathname stored in space obtained from sqliteMalloc().
+** The calling function is responsible for freeing this space once it
+** is no longer needed.
+*/
+char *sqlite3OsFullPathname(const char *zRelative){
+  char *zFull = 0;
+  if( zRelative[0]=='/' ){
+    sqlite3SetString(&zFull, zRelative, (char*)0);
+  }else{
+    char zBuf[5000];
+    zBuf[0] = 0;
+    sqlite3SetString(&zFull, getcwd(zBuf, sizeof(zBuf)), "/", zRelative,
+                    (char*)0);
+  }
+  return zFull;
+}
+
+
+#endif /* SQLITE_OMIT_DISKIO */
+/***************************************************************************
+** Everything above deals with file I/O.  Everything that follows deals
+** with other miscellanous aspects of the operating system interface
+****************************************************************************/
+
+
+/*
 ** Get information to seed the random number generator.  The seed
 ** is written into the buffer zBuf[256].  The calling function must
 ** supply a sufficiently large buffer.
@@ -1280,25 +1318,6 @@ void sqlite3OsLeaveMutex(){
 }
 
 /*
-** Turn a relative pathname into a full pathname.  Return a pointer
-** to the full pathname stored in space obtained from sqliteMalloc().
-** The calling function is responsible for freeing this space once it
-** is no longer needed.
-*/
-char *sqlite3OsFullPathname(const char *zRelative){
-  char *zFull = 0;
-  if( zRelative[0]=='/' ){
-    sqlite3SetString(&zFull, zRelative, (char*)0);
-  }else{
-    char zBuf[5000];
-    zBuf[0] = 0;
-    sqlite3SetString(&zFull, getcwd(zBuf, sizeof(zBuf)), "/", zRelative,
-                    (char*)0);
-  }
-  return zFull;
-}
-
-/*
 ** The following variable, if set to a non-zero value, becomes the result
 ** returned from sqlite3OsCurrentTime().  This is used for testing.
 */
@@ -1323,24 +1342,4 @@ int sqlite3OsCurrentTime(double *prNow){
   return 0;
 }
 
-#if 0 /* NOT USED */
-/*
-** Find the time that the file was last modified.  Write the
-** modification time and date as a Julian Day number into *prNow and
-** return SQLITE_OK.  Return SQLITE_ERROR if the modification
-** time cannot be found.
-*/
-int sqlite3OsFileModTime(OsFile *id, double *prNow){
-  int rc;
-  struct stat statbuf;
-  if( fstat(id->h, &statbuf)==0 ){
-    *prNow = statbuf.st_mtime/86400.0 + 2440587.5;
-    rc = SQLITE_OK;
-  }else{
-    rc = SQLITE_ERROR;
-  }
-  return rc;
-}
-#endif /* NOT USED */
-
 #endif /* OS_UNIX */