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-rw-r--r--filter/filec.c349
1 files changed, 0 insertions, 349 deletions
diff --git a/filter/filec.c b/filter/filec.c
deleted file mode 100644
index 05813185..00000000
--- a/filter/filec.c
+++ /dev/null
@@ -1,349 +0,0 @@
-#include <fitz.h>
-
-fz_error *
-fz_ferror(fz_file *f)
-{
- fz_error *e = f->error;
- f->error = nil;
- return e;
-}
-
-fz_error *
-fz_openfile(fz_file **filep, char *path, int mode)
-{
- fz_error *error;
- fz_file *file;
- int realmode;
- int fd;
- int n;
-
- assert(mode == FZ_READ || mode == FZ_WRITE || mode == FZ_APPEND);
-
- realmode = 0;
- if (mode == FZ_READ)
- realmode = O_BINARY | O_RDONLY;
- if (mode == FZ_WRITE)
- realmode = O_BINARY | O_WRONLY | O_CREAT | O_TRUNC;
- if (mode == FZ_APPEND)
- realmode = O_BINARY | O_WRONLY;
-
- fd = open(path, realmode, 0644);
- if (fd == -1)
- return fz_throw("ioerror: open '%s': %s", path, strerror(errno));
-
- if (mode == FZ_APPEND)
- {
- mode = FZ_WRITE;
- n = lseek(fd, 0, 2);
- if (n == -1) {
- error = fz_throw("ioerror: lseek: %s", strerror(errno));
- close(fd);
- return error;
- }
- }
-
- file = *filep = fz_malloc(sizeof(fz_file));
- if (!file)
- return fz_outofmem;
-
- file->mode = mode;
- file->fd = fd;
- file->depth = 0;
- file->error = nil;
- file->filter = nil;
- file->in = nil;
- file->out = nil;
-
- error = fz_newbuffer(&file->in, FZ_BUFSIZE);
- if (error)
- goto cleanup;
-
- error = fz_newbuffer(&file->out, FZ_BUFSIZE);
- if (error)
- goto cleanup;
-
- return nil;
-
-cleanup:
- *filep = nil;
- close(fd);
- fz_dropbuffer(file->out);
- fz_dropbuffer(file->in);
- fz_free(file);
- return error;
-}
-
-fz_error *
-fz_openbuffer(fz_file **filep, fz_buffer *buf, int mode)
-{
- fz_error *error;
- fz_file *file;
-
- assert(mode == FZ_READ || mode == FZ_WRITE);
-
- file = *filep = fz_malloc(sizeof(fz_file));
- if (!file)
- return fz_outofmem;
-
- file->mode = mode;
- file->fd = -1;
- file->depth = 0;
- file->error = nil;
- file->filter = nil;
-
- if (mode == FZ_READ)
- {
- file->out = fz_keepbuffer(buf);
- error = fz_newbuffer(&file->in, FZ_BUFSIZE);
- if (error)
- goto cleanup;
- }
-
- else
- {
- error = fz_newbuffer(&file->out, FZ_BUFSIZE);
- if (error)
- goto cleanup;
- file->in = fz_keepbuffer(buf);
- }
-
- return nil;
-
-cleanup:
- *filep = nil;
- fz_free(file);
- return error;
-}
-
-void
-fz_closefile(fz_file *file)
-{
- assert(file->depth == 0);
-
- if (file->mode == FZ_WRITE)
- fz_flush(file);
-
- if (file->error)
- {
- fz_warn("%s", file->error->msg);
- fz_droperror(file->error);
- file->error = nil;
- }
-
- if (file->fd != -1) /* open to real file */
- close(file->fd);
-
- fz_dropbuffer(file->in);
- fz_dropbuffer(file->out);
-
- if (file->filter)
- fz_dropfilter(file->filter);
-
- fz_free(file);
-}
-
-fz_error *
-fz_pushfilter(fz_file *file, fz_filter *filter)
-{
- fz_error *error;
-
- /* without a filter, one buffer is ignored: unignore. */
- if (file->depth == 0)
- {
- fz_buffer *buf;
-
- buf = file->out;
- file->out = file->in;
- file->in = buf;
-
- if (file->mode == FZ_READ)
- {
- file->out->rp = file->out->bp;
- file->out->wp = file->out->bp;
- file->out->eof = 0;
- }
- else
- {
- file->out->eof = 0;
- file->in->rp = file->in->bp;
- file->in->wp = file->in->bp;
- file->in->eof = 0;
- }
-
- file->filter = fz_keepfilter(filter);
- }
-
- else
- {
- if (file->mode == FZ_READ)
- {
- error = fz_chainpipeline(&file->filter, file->filter, filter, file->out);
- if (error)
- return error;
-
- error = fz_newbuffer(&file->out, FZ_BUFSIZE);
- if (error)
- {
- fz_unchainpipeline(file->filter, &file->filter, &file->out);
- return error;
- }
- }
-
- else
- {
- error = fz_chainpipeline(&file->filter, filter, file->filter, file->in);
- if (error)
- return error;
-
- error = fz_newbuffer(&file->in, FZ_BUFSIZE);
- if (error)
- {
- fz_unchainpipeline(file->filter, &file->filter, &file->in);
- return error;
- }
- }
- }
-
- file->depth ++;
-
- return nil;
-}
-
-void
-fz_popfilter(fz_file *file)
-{
- fz_buffer *buf;
-
- assert(file->depth > 0);
-
- if (file->mode == FZ_WRITE)
- fz_flush(file);
-
- if (file->error)
- {
- fz_warn("%s", file->error->msg);
- fz_droperror(file->error);
- file->error = nil;
- }
-
- if (file->depth == 1)
- {
- fz_dropfilter(file->filter);
- file->filter = nil;
-
- buf = file->out;
- file->out = file->in;
- file->in = buf;
- }
- else
- {
- if (file->mode == FZ_READ)
- {
- fz_dropbuffer(file->out);
- fz_unchainpipeline(file->filter, &file->filter, &file->out);
- }
- else
- {
- fz_dropbuffer(file->in);
- fz_unchainpipeline(file->filter, &file->filter, &file->in);
- }
- }
-
- file->depth --;
-}
-
-int
-fz_seek(fz_file *f, int ofs, int whence)
-{
- int t;
- int c;
-
- if (f->filter)
- {
- assert(f->mode == FZ_READ && whence == 0);
-
- if (ofs < fz_tell(f))
- {
- f->error = fz_throw("ioerror: cannot seek backwards in filter");
- return -1;
- }
- while (fz_tell(f) < ofs)
- {
- c = fz_readbyte(f);
- if (c == EOF)
- return -1;
- }
- return ofs;
- }
-
- if (whence == 1)
- {
- ofs = fz_tell(f) + ofs;
- whence = 0;
- }
-
- if (f->fd == -1)
- {
- if (whence == 0)
- {
- if (f->mode == FZ_READ)
- f->out->rp = CLAMP(f->out->bp + ofs, f->out->bp, f->in->ep);
- else
- f->in->wp = CLAMP(f->in->bp + ofs, f->in->bp, f->in->ep);
- }
- else
- {
- if (f->mode == FZ_READ)
- f->out->rp = CLAMP(f->out->ep + ofs, f->out->bp, f->in->ep);
- else
- f->in->wp = CLAMP(f->in->ep + ofs, f->in->bp, f->in->ep);
- }
- return fz_tell(f);
- }
-
- t = lseek(f->fd, ofs, whence);
- if (t == -1)
- {
- f->error = fz_throw("ioerror: lseek: %s", strerror(errno));
- return -1;
- }
-
- f->out->rp = f->out->bp;
- f->out->wp = f->out->bp;
- f->out->eof = 0;
-
- return t;
-}
-
-int
-fz_tell(fz_file *f)
-{
- int t;
-
- if (f->filter)
- {
- assert(f->mode == FZ_READ);
- return f->filter->count - (f->out->wp - f->out->rp);
- }
-
- if (f->fd == -1)
- {
- if (f->mode == FZ_READ)
- return f->out->rp - f->out->bp;
- else
- return f->in->wp - f->in->bp;
- }
-
- t = lseek(f->fd, 0, 1);
- if (t == -1)
- {
- f->error = fz_throw("ioerror: lseek: %s", strerror(errno));
- return -1;
- }
-
- if (f->mode == FZ_READ)
- return t - (f->out->wp - f->out->rp);
- else
- return t + (f->in->wp - f->in->rp);
-}
-
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