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patch 8.1.1766: code for writing session file is spread out

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Problem:    Code for writing session file is spread out.
Solution:   Put it in one file. (Yegappan Lakshmanan, closes #4728)
This commit is contained in:
Bram Moolenaar
2019-07-28 14:15:42 +02:00
parent f91aac5e3e
commit 8453807911
16 changed files with 1401 additions and 1422 deletions
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77
src/misc2.c
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@@ -4678,80 +4678,3 @@ build_argv_from_list(list_T *l, char ***argv, int *argc)
}
# endif
#endif
#if defined(FEAT_SESSION) || defined(PROTO)
/*
* Generate a script that can be used to restore the current editing session.
* Save the value of v:this_session before running :mksession in order to make
* automagic session save fully transparent. Return TRUE on success.
*/
int
write_session_file(char_u *filename)
{
char_u *escaped_filename;
char *mksession_cmdline;
unsigned int save_ssop_flags;
int failed;
/*
* Build an ex command line to create a script that restores the current
* session if executed. Escape the filename to avoid nasty surprises.
*/
escaped_filename = vim_strsave_escaped(filename, escape_chars);
if (escaped_filename == NULL)
return FALSE;
mksession_cmdline = alloc(10 + (int)STRLEN(escaped_filename) + 1);
if (mksession_cmdline == NULL)
{
vim_free(escaped_filename);
return FALSE;
}
strcpy(mksession_cmdline, "mksession ");
STRCAT(mksession_cmdline, escaped_filename);
vim_free(escaped_filename);
/*
* Use a reasonable hardcoded set of 'sessionoptions' flags to avoid
* unpredictable effects when the session is saved automatically. Also,
* we definitely need SSOP_GLOBALS to be able to restore v:this_session.
* Don't use SSOP_BUFFERS to prevent the buffer list from becoming
* enormously large if the GNOME session feature is used regularly.
*/
save_ssop_flags = ssop_flags;
ssop_flags = (SSOP_BLANK|SSOP_CURDIR|SSOP_FOLDS|SSOP_GLOBALS
|SSOP_HELP|SSOP_OPTIONS|SSOP_WINSIZE|SSOP_TABPAGES);
do_cmdline_cmd((char_u *)"let Save_VV_this_session = v:this_session");
failed = (do_cmdline_cmd((char_u *)mksession_cmdline) == FAIL);
do_cmdline_cmd((char_u *)"let v:this_session = Save_VV_this_session");
do_unlet((char_u *)"Save_VV_this_session", TRUE);
ssop_flags = save_ssop_flags;
vim_free(mksession_cmdline);
/*
* Reopen the file and append a command to restore v:this_session,
* as if this save never happened. This is to avoid conflicts with
* the user's own sessions. FIXME: It's probably less hackish to add
* a "stealth" flag to 'sessionoptions' -- gotta ask Bram.
*/
if (!failed)
{
FILE *fd;
fd = open_exfile(filename, TRUE, APPENDBIN);
failed = (fd == NULL
|| put_line(fd, "let v:this_session = Save_VV_this_session") == FAIL
|| put_line(fd, "unlet Save_VV_this_session") == FAIL);
if (fd != NULL && fclose(fd) != 0)
failed = TRUE;
if (failed)
mch_remove(filename);
}
return !failed;
}
#endif