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Avoid `goto`, support '\r', and fix typo in scan_includes.c

This commit is contained in:
Rangi 2023-08-15 19:19:15 -04:00
parent 8e71632536
commit a5c36a72c4
1 changed files with 18 additions and 20 deletions
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38
tools/scan_includes.c
View File

@ -3,6 +3,8 @@
#include "common.h"
#include <ctype.h>
void parse_args(int argc, char *argv[], bool *strict) {
struct option long_options[] = {
{"strict", no_argument, 0, 's'},
@ -40,8 +42,7 @@ void scan_file(const char *filename, bool strict) {
fclose(f);
contents[size] = '\0';
for (char *ptr = contents; ptr && ptr - contents < size; ptr++) {
bool is_incbin = false, is_include = false;
for (char *ptr = contents; ptr && ptr < contents + size; ptr++) {
ptr = strpbrk(ptr, ";\"Ii");
if (!ptr) {
break;
@ -49,36 +50,34 @@ void scan_file(const char *filename, bool strict) {
switch (*ptr) {
case ';':
// Skip comments until the end of the line
ptr = strchr(ptr + 1, '\n');
if (!ptr) {
fprintf(stderr, "%s: no newline at end of file\n", filename);
goto done;
}
break;
case '"':
// Skip string iteral until the closing quote
ptr = strchr(ptr + 1, '"');
if (ptr) {
ptr += strcspn(ptr + 1, "\r\n");
if (*ptr) {
ptr++;
} else {
fprintf(stderr, "%s: unterminated string\n", filename);
goto done;
}
break;
case '"':
// Skip string literal until the closing quote
ptr += strcspn(ptr + 1, "\"");
if (*ptr) {
ptr++;
}
break;
case 'I':
case 'i':
/* empty statement between the label and the variable declaration */;
// Check that an INCLUDE/INCBIN starts as its own token
char before = ptr > contents ? *(ptr - 1) : '\n';
if (before != ' ' && before != '\t' && before != '\n' && before != ':') {
if (!isspace((unsigned)before) && before != ':') {
break;
}
is_incbin = !strncmp(ptr, "INCBIN", 6) || !strncmp(ptr, "incbin", 6);
is_include = !strncmp(ptr, "INCLUDE", 7) || !strncmp(ptr, "include", 7);
bool is_incbin = !strncmp(ptr, "INCBIN", 6) || !strncmp(ptr, "incbin", 6);
bool is_include = !strncmp(ptr, "INCLUDE", 7) || !strncmp(ptr, "include", 7);
if (is_incbin || is_include) {
// Check that an INCLUDE/INCBIN ends as its own token
ptr += is_include ? 7 : 6;
if (*ptr != ' ' && *ptr != '\t' && *ptr != '\n' && *ptr != '"') {
if (!isspace((unsigned)*ptr) && *ptr != '"') {
break;
}
ptr += strspn(ptr, " \t");
@ -105,7 +104,6 @@ void scan_file(const char *filename, bool strict) {
}
}
done:
free(contents);
}