added beginining of gphoto2 utility library for frontends

git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@552 67ed7778-7388-44ab-90cf-0a291f65f57c

frontends/Makefile.am

@@ -1,3 +1,3 @@
 ## Process this file with automake to generate a GNU Makefile
 
-SUBDIRS = command-line
+SUBDIRS = command-line libgphoto2-util

frontends/command-line/Makefile.am

@@ -7,4 +7,5 @@ CFLAGS = @CFLAGS@ -I$(top_srcdir)/include
 gphoto2_SOURCES = main.c main.h \
 		interface.c interface.h
 
-gphoto2_LDADD = ../../libgphoto2/libgphoto2.la
+gphoto2_LDADD = ../../libgphoto2/libgphoto2.la \
+		../libgphoto2-util/libgphoto2-util.la

frontends/libgphoto2-util/Makefile.am

@@ -0,0 +1,10 @@
+lib_LTLIBRARIES = libgphoto2-util.la
+
+CFLAGS= @CFLAGS@ \
+	-Wall \
+	-I$(top_srcdir)/include \
+	-DCAMLIBS=\"$(pkglibdir)\"
+
+libgphoto2-util_la_LDFLAGS = -version-info 0:0:0
+libgphoto2-util_la_SOURCES = \
+			cache.c cache.h

frontends/libgphoto2-util/cache.c

@@ -0,0 +1,184 @@
+#include <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <gphoto2.h>
+
+#include "cache.h"
+
+int cache_put (int camera_number, int folder_number, int file_number, CameraFile *file) {
+
+	FILE *fp;
+	char buf[1024];
+
+	sprintf(buf, "%s/.gphoto/cache/%i-%i-%i.%i", getenv("HOME"), 
+		camera_number, folder_number, file_number, file->type);
+#ifdef DEBUG
+	printf("cache: putting \"%s\"... ", buf);
+	fflush(stdout);
+#endif
+	fp = fopen(buf, "w");
+	fwrite(file->data, (size_t)sizeof(char), (size_t)file->size, fp);
+	fclose(fp);
+
+#ifdef DEBUG
+	printf("done!\n");
+#endif 
+	return (GP_OK);
+}
+
+int cache_get (int camera_number, int folder_number, int file_number, CameraFile *file) {
+
+	FILE *fp;
+	DIR  *d;
+	struct dirent *de;
+	long int s;
+	int camn, foldn, filen, filet;
+	char buf[1024], cachedir[1024];
+
+	sprintf(cachedir, "%s/.gphoto/cache", getenv("HOME"));
+	d = opendir(cachedir);
+#ifdef DEBUG
+	printf("cache: getting (%i, %i, %i)... ", 
+		camera_number, folder_number, file_number);
+	fflush(stdout);
+#endif
+
+	do {
+		camn  = -1;
+		foldn = -1;
+		filen = -1;
+		/* Read each entry */
+		de = readdir(d);
+		if (de) {
+			sscanf(de->d_name, "%i-%i-%i.%i", 
+			       &camn, &foldn, &filen, &filet);
+			if ((camn  == camera_number) &&
+			    (foldn == folder_number) && 
+			    (filen == file_number)) {
+				sprintf(buf, "%s/%s", cachedir, de->d_name);
+#ifdef DEBUG
+	printf("found! (%s)\n", de->d_name);
+#endif
+				fp = fopen(buf, "w");
+				fseek(fp, 0, SEEK_END);
+				s = ftell(fp);
+				rewind(fp);
+				file->data = (char*)malloc(sizeof(char)*s);
+				fread(file->data, (size_t)sizeof(char), 
+					(size_t)file->size, fp);
+				fclose(fp);
+				file->size = s;
+				file->type = filet;
+				return (GP_OK);
+			}
+		}
+	} while (de);
+#ifdef DEBUG
+	printf("error! didn't exist!\n");
+#endif 
+	return (GP_ERROR);
+}
+
+int cache_delete (int camera_number, int folder_number, int file_number) {
+
+	/* if file_number   == -1, all the files in the folder get deleted */
+	/* if folder_number == -1, all the folders for camera get deleted */
+	/* if camera_number == -1, ALL the camera's files get delete */
+
+	DIR  *d;
+	struct dirent *de;
+	int camn, foldn, filen, filet;
+	char buf[1024], cachedir[1024];
+
+#ifdef DEBUG
+	printf("cache: Deleting (%i, %i, %i)...\n", 
+		camera_number, folder_number, file_number);
+	fflush(stdout);
+#endif
+	sprintf(cachedir, "%s/.gphoto/cache", getenv("HOME"));
+	d = opendir(cachedir);
+	do {
+		camn  = -2;
+		foldn = -2;
+		filen = -2;
+		/* Read each entry */
+		de = readdir(d);
+		if (de) {
+			sscanf(de->d_name, "%i-%i-%i.%i", 
+			       &camn, &foldn, &filen, &filet);
+			if ((camn>=0)&&(foldn>=0)&&(filen>=0)) {
+				sprintf(buf, "%s/%s", cachedir, de->d_name);
+				if (((camn  == camera_number) &&
+				     (foldn == folder_number) &&
+				     (filen == file_number))
+					||
+				    ((camn  == camera_number) &&
+				     (foldn == folder_number) &&
+				     (file_number == -1))
+					||
+				    ((camn  == camera_number) &&
+				     (folder_number == -1))
+					||
+				     (camera_number == -1)) {
+#ifdef DEBUG
+					printf("cache: Removing %s\n", buf);
+#endif
+					unlink(buf);
+				} else {
+#ifdef DEBUG
+					printf("cache: Leaving %s\n", buf);
+#endif
+				}
+
+			}
+			
+		}
+	} while (de);
+
+	return (GP_OK);
+}
+
+int cache_exists (int camera_number, int folder_number, int file_number) {
+
+	DIR  *d;
+	struct dirent *de;
+	int camn, foldn, filen, filet;
+	char cachedir[1024];
+
+#ifdef DEBUG
+	printf("cache: looking for (%i, %i, %i)... ", 
+		camera_number, folder_number, file_number);
+	fflush(stdout);
+#endif
+
+	sprintf(cachedir, "%s/.gphoto/cache", getenv("HOME"));
+	d = opendir(cachedir);
+	do {
+		camn  = -1;
+		foldn = -1;
+		filen = -1;
+		/* Read each entry */
+		de = readdir(d);
+		if (de) {
+			sscanf(de->d_name, "%i-%i-%i.%i", 
+			       &camn, &foldn, &filen, &filet);
+			if ((camn == camera_number) &&
+			    (foldn == folder_number) && 
+			    (filen == file_number)) {
+#ifdef DEBUG
+	printf("found! (%s)\n", de->d_name);
+#endif
+				return (GP_OK);
+			}
+		}
+	} while (de);
+
+#ifdef DEBUG
+	printf("missing!\n");
+#endif
+
+	return (GP_ERROR);
+}

frontends/libgphoto2-util/cache.h

@@ -0,0 +1,5 @@
+int cache_put (int camera_number, int folder_number, int file_number, CameraFile *file);
+int cache_get (int camera_number, int folder_number, int file_number, CameraFile *file);
+int cache_exists (int camera_number, int folder_number, int file_number);
+int cache_delete (int camera_number, int folder_number, int file_number);
+

frontends/libgphoto2-util/image.c

@@ -0,0 +1,22 @@
+int gp_file_image_rotate (CameraFile *old_file, CameraFile *new_file,
+			  int degrees) {
+
+	return(GP_OK);
+}
+
+int gp_file_image_scale  (CameraFile *old_file, CameraFile *new_file,
+			  int width, int height) {
+
+	return(GP_OK);
+}
+
+int gp_file_image_flip_h (CameraFile *old_file, CameraFile *new_file) {
+
+	return(GP_OK);
+}
+
+int gp_file_image_flip_v (CameraFile *old_file, CameraFile *new_file) {
+
+	return(GP_OK);
+}
+

frontends/libgphoto2-util/image.h

@@ -0,0 +1,6 @@
+int gp_file_image_rotate (CameraFile *old_file, CameraFile *new_file, 
+			  int degrees);
+int gp_file_image_scale  (CameraFile *old_file, CameraFile *new_file, 
+			  int new_width, int new_height);
+int gp_file_image_flip_h (CameraFile *old_file, CameraFile *new_file);
+int gp_file_image_flip_v (CameraFile *old_file, CameraFile *new_file);