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Reformat some comment blocks, fix a few typos, and remove a few unneeded

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blank lines.  Patch by David Lawrence Ramsey was lightly tweaked.


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@4750 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
This commit is contained in:
Benno Schulenberg
2014-04-08 12:35:18 +00:00
parent 91c740ed3b
commit d0dec31778
5 changed files with 79 additions and 99 deletions
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151
src/files.c
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@@ -105,19 +105,18 @@ void initialize_buffer_text(void)
openfile->totsize = 0;
}
#ifndef NANO_TINY
/* Actyally write the lock file. This function will
ALWAYS annihilate any previous version of the file.
We'll borrow INSECURE_BACKUP here to decide about lock file
paranoia here as well...
Args:
lockfilename: file name for lock
origfilename: name of the file the lock is for
modified: whether to set the modified bit in the file
Returns: 1 on success, 0 on failure (but continue loading), -1 on failure and abort
*/
/* Actually write the lockfile. This function will ALWAYS annihilate
* any previous version of the file. We'll borrow INSECURE_BACKUP here
* to decide about lockfile paranoia here as well...
*
* Args:
* lockfilename: file name for lock
* origfilename: name of the file the lock is for
* modified: whether to set the modified bit in the file
*
* Returns: 1 on success, 0 on failure (but continue loading), -1 on
* failure and abort. */
int write_lockfile(const char *lockfilename, const char *origfilename, bool modified)
{
int cflags, fd;
@@ -130,8 +129,8 @@ int write_lockfile(const char *lockfilename, const char *origfilename, bool modi
ssize_t lockdatalen = 1024;
ssize_t wroteamt;
/* Run things which might fail first before we try and blow away
the old state */
/* Run things which might fail first before we try and blow away the
* old state. */
myuid = geteuid();
if ((mypwuid = getpwuid(myuid)) == NULL) {
statusbar(_("Couldn't determine my identity for lock file (getpwuid() failed)"));
@@ -155,14 +154,14 @@ int write_lockfile(const char *lockfilename, const char *origfilename, bool modi
fd = open(lockfilename, cflags,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
/* Maybe we just don't have write access, don't stop us from
opening the file at all, just don't set the lock_filename
and return success */
/* Maybe we just don't have write access. Don't stop us from
* opening the file at all, just don't set the lock_filename and
* return success. */
if (fd < 0 && errno == EACCES)
return 1;
/* Now we've got a safe file stream. If the previous open()
call failed, this will return NULL. */
/* Now we've got a safe file stream. If the previous open() call
* failed, this will return NULL. */
filestream = fdopen(fd, "wb");
if (fd < 0 || filestream == NULL) {
@@ -171,25 +170,24 @@ int write_lockfile(const char *lockfilename, const char *origfilename, bool modi
return -1;
}
/* Okay. so at the moment we're following this state for how
to store the lock data:
byte 0 - 0x62
byte 1 - 0x30
bytes 2-12 - program name which created the lock
bytes 24,25 - little endian store of creator program's PID
(b24 = 256^0 column, b25 = 256^1 column)
bytes 28-44 - username of who created the lock
bytes 68-100 - hostname of where the lock was created
bytes 108-876 - filename the lock is for
byte 1007 - 0x55 if file is modified
Looks like VIM also stores undo state in this file so we're
gonna have to figure out how to slap a 'OMG don't use recover
on our lockfile' message in here...
This is likely very wrong, so this is a WIP
*/
/* Okay, so at the moment we're following this state for how to
* store the lock data:
*
* byte 0 - 0x62
* byte 1 - 0x30
* bytes 2-12 - program name which created the lock
* bytes 24,25 - little endian store of creator program's PID
* (b24 = 256^0 column, b25 = 256^1 column)
* bytes 28-44 - username of who created the lock
* bytes 68-100 - hostname of where the lock was created
* bytes 108-876 - filename the lock is for
* byte 1007 - 0x55 if file is modified
*
* Looks like VIM also stores undo state in this file, so we're
* gonna have to figure out how to slap a 'OMG don't use recover on
* our lockfile' message in here...
*
* This is likely very wrong, so this is a WIP. */
null_at(&lockdata, lockdatalen);
lockdata[0] = 0x62;
lockdata[1] = 0x30;
@@ -224,10 +222,8 @@ int write_lockfile(const char *lockfilename, const char *origfilename, bool modi
return 1;
}
/* Less exciting, delete the lock file.
Return -1 if successful and complain on the statusbar, 1 otherwite
*/
/* Less exciting, delete the lockfile. Return -1 if unsuccessful and
* complain on the statusbar, 1 otherwise. */
int delete_lockfile(const char *lockfilename)
{
if (unlink(lockfilename) < 0 && errno != ENOENT) {
@@ -238,12 +234,10 @@ int delete_lockfile(const char *lockfilename)
return 1;
}
/* Deal with lockfiles. Return -1 on refusing to override
the lock file, and 1 on successfully created the lockfile, 0 means
we were not successful on creating the lockfile but we should
continue to load the file and complain to the user.
*/
/* Deal with lockfiles. Return -1 on refusing to override the lockfile,
* and 1 on successfully creating it; 0 means we were not successful in
* creating the lockfile but we should continue to load the file and
* complain to the user. */
int do_lockfile(const char *filename)
{
char *lockdir = dirname((char *) mallocstrcpy(NULL, filename));
@@ -255,7 +249,6 @@ int do_lockfile(const char *filename)
struct stat fileinfo;
int lockfd, lockpid;
snprintf(lockfilename, lockfilesize, "%s/%s%s%s", lockdir,
locking_prefix, lockbase, locking_suffix);
#ifdef DEBUG
@@ -305,7 +298,6 @@ int do_lockfile(const char *filename)
}
#endif /* !NANO_TINY */
/* If it's not "", filename is a file to open. We make a new buffer, if
* necessary, and then open and read the file, if applicable. */
void open_buffer(const char *filename, bool undoable)
@@ -499,12 +491,11 @@ bool close_buffer(void)
}
#endif /* !DISABLE_MULTIBUFFER */
/* A bit of a copy and paste from open_file(), is_file_writable()
* just checks whether the file is appendable as a quick
* permissions check, and we tend to err on the side of permissiveness
* (reporting TRUE when it might be wrong) to not fluster users
* editing on odd filesystems by printing incorrect warnings.
*/
/* A bit of a copy and paste from open_file(), is_file_writable() just
* checks whether the file is appendable as a quick permissions check,
* and we tend to err on the side of permissiveness (reporting TRUE when
* it might be wrong) to not fluster users editing on odd filesystems by
* printing incorrect warnings. */
int is_file_writable(const char *filename)
{
struct stat fileinfo, fileinfo2;
@@ -597,9 +588,9 @@ filestruct *read_line(char *buf, filestruct *prevnode, bool
/* Read an open file into the current buffer. f should be set to the
* open file, and filename should be set to the name of the file.
* undoable means do we want to create undo records to try and undo this.
* Will also attempt to check file writability if fd > 0 and checkwritable == TRUE
*/
* undoable means do we want to create undo records to try and undo
* this. Will also attempt to check file writability if fd > 0 and
* checkwritable == TRUE. */
void read_file(FILE *f, int fd, const char *filename, bool undoable, bool checkwritable)
{
size_t num_lines = 0;
@@ -909,8 +900,8 @@ int open_file(const char *filename, bool newfie, FILE **f)
#endif
if (stat(full_filename, &fileinfo) == -1) {
/* Well, maybe we can open the file even if the OS
says its not there */
/* Well, maybe we can open the file even if the OS says it's
* not there. */
if ((fd = open(filename, O_RDONLY)) != -1) {
statusbar(_("Reading File"));
free(full_filename);
@@ -1585,15 +1576,14 @@ bool check_operating_dir(const char *currpath, bool allow_tabcomp)
#endif
#ifndef NANO_TINY
/* Although this sucks, it sucks less than having a single 'my system is messed up
* and I'm blanket allowing insecure file writing operations.
*/
/* Although this sucks, it sucks less than having a single 'my system is
* messed up and I'm blanket allowing insecure file writing operations'. */
int prompt_failed_backupwrite(const char *filename)
{
static int i;
static char *prevfile = NULL; /* What was the laast file we were paased so we don't keep asking this?
though maybe we should.... */
static char *prevfile = NULL; /* What was the last file we were
* passed so we don't keep asking
* this? Though maybe we should... */
if (prevfile == NULL || strcmp(filename, prevfile)) {
i = do_yesno_prompt(FALSE,
_("Failed to write backup file, continue saving? (Say N if unsure) "));
@@ -2924,9 +2914,8 @@ char *histfilename(void)
return construct_filename("/.nano/search_history");
}
/* Construct the legacy history filename
* (Deprecate in 2.5, delete later
*/
/* Construct the legacy history filename.
* (Deprecate in 2.5, delete later.) */
char *legacyhistfilename(void)
{
return construct_filename("/.nano_history");
@@ -2953,10 +2942,9 @@ void history_error(const char *msg, ...)
}
/* Now that we have more than one history file, let's just rely
on a .nano dir for this stuff. Return 1 if the dir exists
or was successfully created, and return 0 otherwise.
*/
/* Now that we have more than one history file, let's just rely on a
* .nano dir for this stuff. Return 1 if the dir exists or was
* successfully created, and return 0 otherwise. */
int check_dotnano(void)
{
struct stat dirstat;
@@ -3093,8 +3081,7 @@ void save_history(void)
}
}
/* Analogs for the POS history */
/* Analogs for the POS history. */
void save_poshistory(void)
{
char *poshist;
@@ -3129,9 +3116,8 @@ void save_poshistory(void)
}
}
/* Update the POS history, given a filename line and column.
* If no entry is found, add a new entry on the end
*/
/* Update the POS history, given a filename line and column. If no
* entry is found, add a new entry on the end. */
void update_poshistory(char *filename, ssize_t lineno, ssize_t xpos)
{
poshiststruct *posptr, *posprev = NULL;
@@ -3166,10 +3152,9 @@ void update_poshistory(char *filename, ssize_t lineno, ssize_t xpos)
}
/* Check the POS history to see if file matches
* an existing entry. If so return 1 and set line and column
* to the right values Otherwise return 0
*/
/* Check the POS history to see if file matches an existing entry. If
* so, return 1 and set line and column to the right values. Otherwise,
* return 0. */
int check_poshistory(const char *file, ssize_t *line, ssize_t *column)
{
poshiststruct *posptr;