Mirrors/fish-shell
2
0
Fork 0
mirror of https://github.com/fish-shell/fish-shell synced 2024-12-28 05:43:11 +00:00
Code Issues Projects Releases Packages Wiki Activity

Clean up next_line() interface and implementation

Browse source
This commit is contained in:
ridiculousfish 2019-08-11 12:56:51 -07:00
parent 91987a4548
commit 2ddde381d4
1 changed files with 9 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
src/history_file.cpp
View file

@ -309,26 +309,24 @@ static bool parse_timestamp(const char *str, time_t *out_when) {
/// Returns a pointer to the start of the next line, or NULL. The next line must itself end with a
/// newline. Note that the string is not null terminated.
static const char *next_line(const char *start, size_t length) {
static const char *next_line(const char *start, const char *end) {
// Handle the hopeless case.
if (length < 1) return NULL;
// Get a pointer to the end, that we must not pass.
const char *const end = start + length;
if (end == start) return NULL;
// Skip past the next newline.
const char *nextline = (const char *)std::memchr(start, '\n', length);
if (!nextline || nextline >= end) {
const char *nextline = std::find(start, end, '\n');
if (nextline == end) {
return NULL;
}
// Skip past the newline character itself.
if (++nextline >= end) {
return NULL;
}
// Make sure this new line is itself "newline terminated". If it's not, return NULL.
const char *next_newline = (const char *)std::memchr(nextline, '\n', end - nextline);
if (!next_newline) {
const char *next_newline = std::find(nextline, end, '\n');
if (next_newline == end) {
return NULL;
}
@ -401,9 +399,9 @@ static size_t offset_of_next_item_fish_2_0(const history_file_contents_t &conten
time_t timestamp = 0;
const char *interior_line;
for (interior_line = next_line(line_start, end - line_start);
for (interior_line = next_line(line_start, end);
interior_line != NULL && !has_timestamp;
interior_line = next_line(interior_line, end - interior_line)) {
interior_line = next_line(interior_line, end)) {
// If the first character is not a space, it's not an interior line, so we're done.
if (interior_line[0] != ' ') break;