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#pragma once
#include <err.h>
struct region {
size_t start, end, offset;
};
static inline bool
region_parse(struct region *region, const char *line)
{
*region = (struct region){0};
if (sscanf(line, "%zx-%zx %*s %zx", ®ion->start, ®ion->end, ®ion->offset) < 3 || region->start > region->end) {
warnx("failed to parse mapping:\n%s", line);
return false;
}
return true;
}
static inline void
for_each_line_in_file(FILE *f, void (*cb)(const char *line, void *data), void *data)
{
char *buffer = NULL;
size_t step = 1024, allocated = 0, written = 0, read = 0;
do {
if (written + read >= allocated && !(buffer = realloc(buffer, (allocated += step) + 1)))
err(EXIT_FAILURE, "realloc");
buffer[(written += read)] = 0;
size_t ate = 0;
for (char *line = buffer, *nl; (nl = strchr(line, '\n')); line = nl + 1) {
*nl = 0;
cb(line, data);
ate += nl + 1 - line;
}
memmove(buffer, buffer + ate, (written = written - ate));
} while ((read = fread(buffer + written, 1, allocated - written, f)));
free(buffer);
}
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