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cat/cat-mmap: print newline if file doesn't end in one

This commit is contained in:
Bananymous 2024-01-02 23:27:13 +02:00
parent 9fa13079f2
commit 1bd33e76e5
2 changed files with 8 additions and 0 deletions
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4
userspace/cat-mmap/main.cpp
View File

@ -23,6 +23,10 @@ bool cat_file(int fd)
if (nwrite == -1) if (nwrite == -1)
perror("write"); perror("write");
if (static_cast<uint8_t*>(addr)[st.st_size - 1] != '\n')
if (write(STDOUT_FILENO, "\n", 1) == -1)
perror("write");
if (munmap(addr, st.st_size) == -1) if (munmap(addr, st.st_size) == -1)
{ {
perror("munmap"); perror("munmap");

4
userspace/cat/main.cpp
View File

@ -3,6 +3,7 @@
bool cat_file(int fd) bool cat_file(int fd)
{ {
char last = '\0';
char buffer[1024]; char buffer[1024];
while (ssize_t n_read = read(fd, buffer, sizeof(buffer))) while (ssize_t n_read = read(fd, buffer, sizeof(buffer)))
{ {
@ -12,7 +13,10 @@ bool cat_file(int fd)
return false; return false;
} }
write(STDOUT_FILENO, buffer, n_read); write(STDOUT_FILENO, buffer, n_read);
last = buffer[n_read - 1];
} }
if (last != '\n')
write(STDOUT_FILENO, "\n", 1);
return true; return true;
} }