{"record":{"id":"7c9e991d14f70ead","repo":"DrKLO/Telegram","slug":"required-arguments-n","errorCode":null,"errorMessage":"Required arguments:\\n","messagePattern":"Required arguments:\\\\n","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"TMessagesProj/jni/mozjpeg/yuvjpeg.c","lineNumber":117,"sourceCode":"  int frame_width;\n  int frame_height;\n  const char *yuv_path;\n  const char *jpg_path;\n  FILE *yuv_fd;\n  size_t yuv_size;\n  unsigned char *yuv_buffer;\n  JSAMPLE *jpg_buffer;\n  struct jpeg_compress_struct cinfo;\n  struct jpeg_error_mgr jerr;\n  FILE *jpg_fd;\n  JSAMPROW yrow_pointer[16];\n  JSAMPROW cbrow_pointer[8];\n  JSAMPROW crrow_pointer[8];\n  JSAMPROW *plane_pointer[3];\n  int y;\n\n  if (argc != 5) {\n    fprintf(stderr, \"Required arguments:\\n\");\n    fprintf(stderr, \"1. JPEG quality value, 0-100\\n\");\n    fprintf(stderr, \"2. Image size (e.g. '512x512')\\n\");\n    fprintf(stderr, \"3. Path to YUV input file\\n\");\n    fprintf(stderr, \"4. Path to JPG output file\\n\");\n    return 1;\n  }\n\n  errno = 0;\n\n  quality = strtol(argv[1], NULL, 10);\n  if (errno != 0 || quality < 0 || quality > 100) {\n    fprintf(stderr, \"Invalid JPEG quality value!\\n\");\n    return 1;\n  }\n\n  matches = sscanf(argv[2], \"%dx%d\", &luma_width, &luma_height);\n  if (matches != 2) {\n    fprintf(stderr, \"Invalid image size input!\\n\");","sourceCodeStart":99,"sourceCodeEnd":135,"githubUrl":"https://github.com/DrKLO/Telegram/blob/45ab8f4308496e1f01026a97fcdb0d58a5274474/TMessagesProj/jni/mozjpeg/yuvjpeg.c#L99-L135","documentation":"yuvjpeg is a mozjpeg CLI that converts a raw 4:2:0 YUV file to JPEG. main() requires exactly 5 argv elements (program + 4 args: quality, size, YUV in, JPG out). If argc != 5 it prints the usage header `Required arguments:` to stderr and returns 1. The subsequent fprintf lines (errors 192-194) are the argument descriptions printed as part of the same usage block.","triggerScenarios":"Invoking yuvjpeg with any number of arguments other than 4 (too few or too many).","commonSituations":"Missing the size or output argument, passing flags yuvjpeg does not understand, or a wrapper script miscounting arguments.","solutions":["Invoke as: yuvjpeg <quality 0-100> <WxH> <yuv_in> <jpg_out>.","Validate argc == 5 in the calling script before exec.","Double-check that no extra/blank arguments are appended."],"exampleFix":"// before\nyuvjpeg 90 512x512 in.yuv\n// after\nyuvjpeg 90 512x512 in.yuv out.jpg","handlingStrategy":"validation","validationCode":"/* yuvjpeg needs exactly 4 args: quality, size, yuv_in, jpg_out */\nif (argc != 5) {\n    fprintf(stderr, \"usage: %s <quality 0-100> <WxH> <yuv_in> <jpg_out>\\n\", argv[0]);\n    return 1;\n}","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Wrap yuvjpeg invocations and assert argument count == 4 before exec.","Keep a documented usage string in the calling script.","Reject empty/blank arguments upstream."],"tags":["cli","jpeg","mozjpeg","yuvjpeg","arguments","usage","input-validation"],"backgroundTag":null,"analyzedSha":"45ab8f4308496e1f01026a97fcdb0d58a5274474","analyzedAt":"2026-08-14T05:19:30.815Z","schemaVersion":2},"datasetVersion":"2026-08-14T10:17:34.591Z"}