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#include "mupdf/fitz.h"
struct fz_output_s
{
void *opaque;
int (*printf)(fz_context *, void *opaque, const char *, va_list ap);
int (*write)(fz_context *, void *opaque, const void *, int n);
void (*close)(fz_context *, void *opaque);
};
static int
file_printf(fz_context *ctx, void *opaque, const char *fmt, va_list ap)
{
FILE *file = opaque;
return fz_vfprintf(ctx, file, fmt, ap);
}
static int
file_write(fz_context *ctx, void *opaque, const void *buffer, int count)
{
FILE *file = opaque;
return fwrite(buffer, 1, count, file);
}
static void
file_close(fz_context *ctx, void *opaque)
{
FILE *file = opaque;
fclose(file);
}
fz_output *
fz_new_output_with_file(fz_context *ctx, FILE *file, int close)
{
fz_output *out = fz_malloc_struct(ctx, fz_output);
out->opaque = file;
out->printf = file_printf;
out->write = file_write;
out->close = close ? file_close : NULL;
return out;
}
fz_output *
fz_new_output_to_filename(fz_context *ctx, const char *filename)
{
fz_output *out = NULL;
FILE *file = fz_fopen(filename, "wb");
if (!file)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot open file '%s': %s", filename, strerror(errno));
fz_var(ctx);
fz_try(ctx)
{
out = fz_malloc_struct(ctx, fz_output);
out->opaque = file;
out->printf = file_printf;
out->write = file_write;
out->close = file_close;
}
fz_catch(ctx)
{
fclose(file);
fz_rethrow(ctx);
}
return out;
}
void
fz_drop_output(fz_context *ctx, fz_output *out)
{
if (!out)
return;
if (out->close)
out->close(ctx, out->opaque);
fz_free(ctx, out);
}
int
fz_printf(fz_context *ctx, fz_output *out, const char *fmt, ...)
{
int ret;
va_list ap;
if (!out)
return 0;
va_start(ap, fmt);
ret = out->printf(ctx, out->opaque, fmt, ap);
va_end(ap);
return ret;
}
int
fz_write(fz_context *ctx, fz_output *out, const void *data, int len)
{
if (!out)
return 0;
return out->write(ctx, out->opaque, data, len);
}
void
fz_putc(fz_context *ctx, fz_output *out, char c)
{
if (out)
(void)out->write(ctx, out->opaque, &c, 1);
}
int
fz_puts(fz_context *ctx, fz_output *out, const char *str)
{
if (!out)
return 0;
return out->write(ctx, out->opaque, str, strlen(str));
}
static int
buffer_printf(fz_context *ctx, void *opaque, const char *fmt, va_list list)
{
fz_buffer *buffer = opaque;
return fz_buffer_vprintf(ctx, buffer, fmt, list);
}
static int
buffer_write(fz_context *ctx, void *opaque, const void *data, int len)
{
fz_buffer *buffer = opaque;
fz_write_buffer(ctx, buffer, (unsigned char *)data, len);
return len;
}
static void
buffer_close(fz_context *ctx, void *opaque)
{
fz_buffer *buffer = opaque;
fz_drop_buffer(ctx, buffer);
}
fz_output *
fz_new_output_with_buffer(fz_context *ctx, fz_buffer *buf)
{
fz_output *out = fz_malloc_struct(ctx, fz_output);
out->opaque = fz_keep_buffer(ctx, buf);
out->printf = buffer_printf;
out->write = buffer_write;
out->close = buffer_close;
return out;
}
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