106 lines
2.3 KiB
C
106 lines
2.3 KiB
C
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#include "mupdf/fitz.h"
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#include <string.h>
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#include <errno.h>
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#include <sys/stat.h>
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#ifdef _MSC_VER
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#define stat _stat
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#endif
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typedef struct fz_directory_s fz_directory;
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struct fz_directory_s
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{
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fz_archive super;
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char *path;
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};
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static void drop_directory(fz_context *ctx, fz_archive *arch)
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{
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fz_directory *dir = (fz_directory *) arch;
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fz_free(ctx, dir->path);
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}
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static fz_stream *open_dir_entry(fz_context *ctx, fz_archive *arch, const char *name)
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{
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fz_directory *dir = (fz_directory *) arch;
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char path[2048];
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fz_strlcpy(path, dir->path, sizeof path);
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fz_strlcat(path, "/", sizeof path);
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fz_strlcat(path, name, sizeof path);
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return fz_open_file(ctx, path);
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}
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static fz_buffer *read_dir_entry(fz_context *ctx, fz_archive *arch, const char *name)
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{
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fz_directory *dir = (fz_directory *) arch;
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char path[2048];
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fz_strlcpy(path, dir->path, sizeof path);
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fz_strlcat(path, "/", sizeof path);
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fz_strlcat(path, name, sizeof path);
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return fz_read_file(ctx, path);
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}
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static int has_dir_entry(fz_context *ctx, fz_archive *arch, const char *name)
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{
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fz_directory *dir = (fz_directory *) arch;
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char path[2048];
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fz_strlcpy(path, dir->path, sizeof path);
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fz_strlcat(path, "/", sizeof path);
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fz_strlcat(path, name, sizeof path);
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return fz_file_exists(ctx, path);
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}
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int
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fz_is_directory(fz_context *ctx, const char *path)
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{
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struct stat info;
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if (stat(path, &info) < 0)
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return 0;
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return S_ISDIR(info.st_mode);
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}
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/*
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Open a directory as if it was an archive.
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A special case where a directory is opened as if it was an
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archive.
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Note that for directories it is not possible to retrieve the
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number of entries or list the entries. It is however possible
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to check if the archive has a particular entry.
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path: a path to a directory as it would be given to opendir(3).
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*/
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fz_archive *
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fz_open_directory(fz_context *ctx, const char *path)
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{
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fz_directory *dir;
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if (!fz_is_directory(ctx, path))
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fz_throw(ctx, FZ_ERROR_GENERIC, "'%s' is not a directory", path);
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dir = fz_new_derived_archive(ctx, NULL, fz_directory);
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dir->super.format = "dir";
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dir->super.has_entry = has_dir_entry;
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dir->super.read_entry = read_dir_entry;
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dir->super.open_entry = open_dir_entry;
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dir->super.drop_archive = drop_directory;
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fz_try(ctx)
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{
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dir->path = fz_strdup(ctx, path);
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}
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fz_catch(ctx)
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{
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fz_drop_archive(ctx, &dir->super);
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fz_rethrow(ctx);
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}
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return &dir->super;
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}
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