nova
123 lines
2.7 KiB
C
123 lines
2.7 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <magic.h>
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#include "backend.h"
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#include "defines.h"
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#include "config.h"
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#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
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static FILE *ueberzug = NULL;
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#endif
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extern unsigned int terminal_height;
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extern unsigned int terminal_width;
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char previewd;
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magic_t cookie_type;
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magic_t cookie_description;
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char* text(file *f);
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void images_print(char *file_name);
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void images_clear();
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char* generic(file *f);
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char* get_mimetype(file *f){
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char *mime = (char*)magic_file(cookie_type, f->file_name);
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return mime;
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}
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char* preview_file(file *f){
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char *file_buffer;
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char *mime = get_mimetype(f);
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#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
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images_clear();
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#endif
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if (mime != NULL) {
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if (strstr(mime, "text")) {
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file_buffer = text(f);
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#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
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} else if (strstr(mime, "image")) {
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file_buffer = generic(f);
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images_print(f->file_name);
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previewd = 1;
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#endif
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} else {
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file_buffer = generic(f);
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}
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} else {
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file_buffer = generic(f);
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}
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/*free(mime); seems like magic_file handles the free too*/
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return file_buffer;
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}
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char* text(file *f){
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unsigned long size = (terminal_width/2) * terminal_height;
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if (size > f->file_size) {
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size = f->file_size;
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}
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char *file_buffer = malloc(size + 1);
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FILE *fp = fopen(f->file_name, "r");
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if (fread(file_buffer, size, 1, fp) != 0) {
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fclose(fp);
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file_buffer[size] = '\0';
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return file_buffer;
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} else {
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fclose(fp);
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return "failed reading file";
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}
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}
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char* generic(file *f){
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char *mime = (char*)magic_file(cookie_description, f->file_name);
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char *buffer = malloc(strlen(mime)+1);
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memcpy(buffer, mime, strlen(mime)+1);
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return buffer;
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}
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#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
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void images_clear(){
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if (previewd == 1) {
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fprintf(ueberzug, "{\"action\": \"remove\", \
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\"identifier\": \"preview\"}\n");
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fflush(ueberzug);
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previewd = 0;
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}
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}
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void images_print(char *file_name){
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char *path=getcwd(NULL, 0);
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fprintf(ueberzug, "{\"action\":\"add\", \
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\"identifier\":\"preview\", \
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\"max_height\":%d, \
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\"max_width\":%d, \
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\"y\":0, \
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\"x\":%d, \
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\"path\":\"%s/%s\"}\n", terminal_height, terminal_width/2, terminal_width/2, path, file_name);
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fflush(ueberzug);
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free(path);
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}
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void ueberzug_init(){
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#if SETTINGS_UEBERZUG_IMAGE_PREVIEW == 2
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ueberzug = popen("ueberzug layer -s ", "w");
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#elif SETTINGS_UEBERZUG_IMAGE_PREVIEW == 1
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ueberzug = popen("ueberzug layer -s --no-cache ", "w");
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#endif
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}
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void file_preview_init(){
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cookie_type = magic_open(MAGIC_MIME_TYPE);
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cookie_description = magic_open(MAGIC_NONE);
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magic_load(cookie_type, NULL);
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magic_load(cookie_description, NULL);
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}
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void ueberzug_close(){
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images_clear();
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pclose(ueberzug);
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}
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#endif
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