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#include "common.h"
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>
line_view load_file(const char* path) {
int fd;
struct stat fs;
fd = open(path, O_RDONLY);
if (fd == -1)
return {nullptr, size_t(0)};
if (fstat(fd, &fs) == -1)
return {nullptr, size_t(0)};
line_view lv;
lv.length = fs.st_size;
lv.line = static_cast<const char*>(mmap(NULL, lv.length, PROT_READ, MAP_PRIVATE, fd, 0));
close(fd);
return lv;
}
line_view next_line(line_view file, size_t* offset) {
const char* p1 = file.line + *offset;
const char* p2 = p1;
const char* end = file.line + file.length;
while (p2 < end && *p2 != '\n') {
p2++;
}
*offset = p2 - file.line + 1;
return {p1, static_cast<size_t>(p2 - p1 + 1)};
}
bool is_repeated(const char* p1, const char* p2) {
char c = *p1;
while (p1 != p2) {
if (*p1 != c) {
return false;
}
p1++;
}
return true;
}
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