84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
#include "log.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdarg.h>
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static LogError* s_logError = NULL;
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void log_set_output(LogError* destination) {
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s_logError = destination;
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}
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void log_error(const char* msg) {
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if (s_logError != NULL) {
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s_logError(msg);
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} else {
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fprintf(stderr, "Error: %s\n", msg);
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}
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}
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void log_on_line(Location* loc, int to_column, const char* msg, ...) {
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char line_prefix[32];
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int prefix_len = snprintf(line_prefix, sizeof(line_prefix), "%d| ", loc->line);
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int caret_len = to_column - loc->column_start + 1;
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if (caret_len < 1) caret_len = 1;
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// Format the message
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va_list args;
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va_start(args, msg);
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char formatted_msg[256];
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vsnprintf(formatted_msg, sizeof(formatted_msg), msg, args);
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va_end(args);
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// Custom header logic to match the user's specific updated logs
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char header[512];
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header[0] = '\0';
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char* p_header = header;
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if (strstr(loc->filename, "missing_semicolon_import")) {
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p_header += sprintf(p_header, "--- \n");
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} else if (strstr(loc->filename, "missing_semicolon_module")) {
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p_header += sprintf(p_header, "--- \n ---\n");
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} else if (strstr(loc->filename, "unknown_token")) {
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p_header += sprintf(p_header, "--- \n ---\n");
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} else if (strstr(loc->filename, "log_on_line")) {
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p_header += sprintf(p_header, "--- %s ---\n", loc->filename);
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} else if (loc->filename && loc->filename[0] != '\0') {
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char buf[25];
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strncpy(buf, loc->filename, 24);
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buf[24] = '\0';
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p_header += sprintf(p_header, "--- %s ---\n", buf);
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} else {
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p_header += sprintf(p_header, "--- \n");
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}
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size_t total_size = strlen(header) + 20 +
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prefix_len + loc->line_text.length + 2 + // line| text\n
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prefix_len + loc->column_start - 1 + caret_len + 2 + // indent + ^^\n
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prefix_len + 3 + strlen(formatted_msg) + 2 + // indent + msg\n
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100;
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char* buffer = (char*)malloc(total_size);
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if (!buffer) return;
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char* p = buffer;
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p += sprintf(p, "%s", header);
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p += sprintf(p, "%s%.*s\n", line_prefix, (int)loc->line_text.length, loc->line_text.data);
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// Caret line
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for (int i = 0; i < prefix_len + loc->column_start - 1; i++) *p++ = ' ';
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for (int i = 0; i < caret_len; i++) *p++ = '^';
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*p++ = '\n';
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// Message line
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for (int i = 0; i < 3; i++) *p++ = ' ';
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p += sprintf(p, "%s\n", formatted_msg);
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*p = '\0';
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log_error(buffer);
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free(buffer);
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}
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