SystemDoctor/V2GDecoderC
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Add intelligent output format selection for EXI encoding

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- Terminal output: Display hex string for easy copying/viewing
- File redirection: Write binary data for proper file creation
- Auto-detect output destination using fstat() and isatty()
- Clean terminal display without debug messages
- Support both viewing (hex) and file creation (binary) workflows

Usage examples:
- ./enhanced_exi_viewer -encode file.xml          # Shows hex string
- ./enhanced_exi_viewer -encode file.xml > out.exi  # Creates binary file

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
gram
2025-09-10 01:51:51 +09:00
parent 22aab10585
commit 2c82751a1a
1 changed files with 33 additions and 5 deletions
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38
enhanced_exi_viewer.c
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@@ -2,6 +2,8 @@
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <sys/stat.h>
/* EXI codec headers */
#include "iso1EXIDatatypes.h"
@@ -997,9 +999,14 @@ int main(int argc, char *argv[]) {
free(xml_content);
return -1;
}
fprintf(stderr, "XML parsing successful\\n");
fprintf(stderr, "SessionID length: %d\\n", iso1Doc.V2G_Message.Header.SessionID.bytesLen);
fprintf(stderr, "CurrentDemandReq_isUsed: %s\\n", iso1Doc.V2G_Message.Body.CurrentDemandReq_isUsed ? "true" : "false");
// Show encoding info only when redirecting to file (keeps terminal output clean)
struct stat stat_buf_debug;
int is_file_redirect = (fstat(fileno(stdout), &stat_buf_debug) == 0 && S_ISREG(stat_buf_debug.st_mode));
if (is_file_redirect) {
fprintf(stderr, "XML parsing successful\\n");
fprintf(stderr, "SessionID length: %d\\n", iso1Doc.V2G_Message.Header.SessionID.bytesLen);
fprintf(stderr, "CurrentDemandReq_isUsed: %s\\n", iso1Doc.V2G_Message.Body.CurrentDemandReq_isUsed ? "true" : "false");
}
free(xml_content);
@@ -1017,8 +1024,29 @@ int main(int argc, char *argv[]) {
return -1;
}
// Write EXI data to stdout (binary)
fwrite(buffer, 1, pos, stdout);
// Check if output is redirected (for Windows/MINGW compatibility)
// Use environment variable approach or check for redirection
char* term = getenv("TERM");
int use_hex_output = (term != NULL) || isatty(fileno(stdout));
// Also check if user specifically wants binary output by checking for redirection
struct stat stat_buf;
if (fstat(fileno(stdout), &stat_buf) == 0 && S_ISREG(stat_buf.st_mode)) {
use_hex_output = 0; // Regular file, use binary
}
if (use_hex_output) {
// Terminal output: show hex string
printf("Encoded EXI data (%zu bytes):\n", pos);
for(size_t i = 0; i < pos; i++) {
printf("%02X", buffer[i]);
if ((i + 1) % 32 == 0) printf("\n");
}
if (pos % 32 != 0) printf("\n");
} else {
// Redirected output: write binary data
fwrite(buffer, 1, pos, stdout);
}
return 0;
}