Refactor: Pass conversion mode to file converter

This is preparation for the resource fork converter.

GitOrigin-RevId: b50299047964e2d6d4a8b6ce3178639ac23f8d50

defs.h

@@ -37,11 +37,6 @@ void print_errcode(OSErr err, const char *msg, ...);
 // Print an out-of-memory error.
 void print_memerr(unsigned long size);
 
-// Print an abort message.
-void print_abort_func(const char *file, int line);
-
-#define print_abort() print_abort_func(__FILE__, __LINE__)
-
 // Log the error result of a function call.
 void log_call(OSErr err, const char *function);
 
@@ -51,13 +46,17 @@ int c2pstr(unsigned char *ostr, const char *istr);
 // Convert a Pascall string (maximum 31 characters) to a C string.
 void p2cstr(char *ostr, const unsigned char *istr);
 
+// Global operation mode
+typedef enum {
+	kModeUnknown,
+	kModePush,
+	kModePull,
+} operation_mode;
+
 // =============================================================================
 // file.c
 // =============================================================================
 
-// Text file conversion function.
-typedef int (*convert_func)(short src, short dest, void *srcBuf, void *destBuf);
-
 enum {
 	kSrcDir,
 	kDestDir,
@@ -90,6 +89,6 @@ struct file_info {
 
 // Synchronize a file according to the action in the action field. The temporary
 // directory must be a valid directory on the destination volume.
-int sync_file(struct file_info *file, convert_func func, short srcVol,
+int sync_file(struct file_info *file, operation_mode mode, short srcVol,
               long srcDir, short destVol, long destDir, short tempVol,
               long tempDir);

file.c

@@ -152,7 +152,7 @@ static int replace_file(FSSpec *temp, FSSpec *dest, file_action action) {
 static Ptr gSrcBuffer;
 static Ptr gDestBuffer;
 
-int sync_file(struct file_info *file, convert_func func, short srcVol,
+int sync_file(struct file_info *file, operation_mode mode, short srcVol,
               long srcDir, short destVol, long destDir, short tempVol,
               long tempDir) {
 	OSType creator = 'MPS ', fileType = 'TEXT';
@@ -241,7 +241,17 @@ int sync_file(struct file_info *file, convert_func func, short srcVol,
 	}
 
 	// Convert data.
-	r = func(srcRef, destRef, gSrcBuffer, gDestBuffer);
+	switch (mode) {
+	case kModePush:
+		r = mac_to_unix(srcRef, destRef, gSrcBuffer, gDestBuffer);
+		break;
+	case kModePull:
+		r = mac_from_unix(srcRef, destRef, gSrcBuffer, gDestBuffer);
+		break;
+	default:
+		print_err("invalid mode");
+		goto error;
+	}
 	if (r != 0) {
 		goto error;
 	}

sync.c

@@ -1,7 +1,5 @@
 #include "defs.h"
 
-#include "convert.h"
-
 #include <CursorCtl.h>
 #include <Files.h>
 #include <Folders.h>
@@ -23,13 +21,6 @@ static const char *kActionName[] = {
 	"delete",
 };
 
-// Global operation mode
-enum {
-	kModeUnknown,
-	kModePush,
-	kModePull,
-};
-
 // Array of metadata entries for files.
 static Handle gFiles;
 static unsigned gFileCount;
@@ -212,7 +203,8 @@ static int list_dir(short vRefNum, long dirID, int which) {
 	return 0;
 }
 
-static int command_main(char *localPath, char *remotePath, int mode) {
+static int command_main(char *localPath, char *remotePath,
+                        operation_mode mode) {
 	short localVol, remoteVol, srcVol, destVol, tempVol;
 	long localDir, remoteDir, srcDir, destDir, tempDir;
 	struct file_info *array, *file;
@@ -220,7 +212,6 @@ static int command_main(char *localPath, char *remotePath, int mode) {
 	int r, i, n;
 	char name[32];
 	bool hasAction;
-	convert_func func;
 
 	// Get handles to local and remote directories.
 	if (localPath == NULL) {
@@ -319,7 +310,6 @@ static int command_main(char *localPath, char *remotePath, int mode) {
 	// Synchronize the files.
 	InitCursorCtl(NULL);
 	if (mode == kModePull) {
-		func = mac_from_unix;
 		err =
 			FindFolder(destVol, kTemporaryFolderType, true, &tempVol, &tempDir);
 		if (err != 0) {
@@ -327,7 +317,6 @@ static int command_main(char *localPath, char *remotePath, int mode) {
 			return 1;
 		}
 	} else {
-		func = mac_to_unix;
 		// When pushing, we use the destination directory as the temporary
 		// folder, to avoid crossing filesystem boundaries on the host.
 		tempVol = destVol;
@@ -340,7 +329,7 @@ static int command_main(char *localPath, char *remotePath, int mode) {
 			fprintf(stderr, "## %s: %s\n", kActionName[file->action], name);
 		}
 		SpinCursor(32);
-		r = sync_file(&array[i], func, srcVol, srcDir, destVol, destDir,
+		r = sync_file(&array[i], mode, srcVol, srcDir, destVol, destDir,
 		              tempVol, tempDir);
 		if (r != 0) {
 			print_err("failed to synchronize file: %s", name);

util.c

@@ -86,10 +86,6 @@ void print_memerr(unsigned long size) {
 	print_errcode(err, "out of memory; size=%lu", size);
 }
 
-void print_abort_func(const char *file, int line) {
-	print_err("assertion failed: %s:d", file, line);
-}
-
 void log_call(OSErr err, const char *function) {
 	const char *emsg;