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ex_cmds2.c
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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* ex_cmds2.c: some more functions for command line commands
*/
#include "vim.h"
#include "version.h"
/*
* If 'autowrite' option set, try to write the file.
* Careful: autocommands may make "buf" invalid!
*
* return FAIL for failure, OK otherwise
*/
int
autowrite(buf_T *buf, int forceit)
{
int r;
bufref_T bufref;
if (!(p_aw || p_awa) || !p_write
// never autowrite a "nofile" or "nowrite" buffer
|| bt_dontwrite(buf)
|| (!forceit && buf->b_p_ro) || buf->b_ffname == NULL)
return FAIL;
set_bufref(&bufref, buf);
r = buf_write_all(buf, forceit);
// Writing may succeed but the buffer still changed, e.g., when there is a
// conversion error. We do want to return FAIL then.
if (bufref_valid(&bufref) && bufIsChanged(buf))
r = FAIL;
return r;
}
/*
* Flush all buffers, except the ones that are readonly or are never written.
*/
void
autowrite_all(void)
{
buf_T *buf;
if (!(p_aw || p_awa) || !p_write)
return;
FOR_ALL_BUFFERS(buf)
if (bufIsChanged(buf) && !buf->b_p_ro && !bt_dontwrite(buf))
{
bufref_T bufref;
set_bufref(&bufref, buf);
(void)buf_write_all(buf, FALSE);
// an autocommand may have deleted the buffer
if (!bufref_valid(&bufref))
buf = firstbuf;
}
}
/*
* Return TRUE if buffer was changed and cannot be abandoned.
* For flags use the CCGD_ values.
*/
int
check_changed(buf_T *buf, int flags)
{
int forceit = (flags & CCGD_FORCEIT);
bufref_T bufref;
set_bufref(&bufref, buf);
if ( !forceit
&& bufIsChanged(buf)
&& ((flags & CCGD_MULTWIN) || buf->b_nwindows <= 1)
&& (!(flags & CCGD_AW) || autowrite(buf, forceit) == FAIL))
{
#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
if ((p_confirm || (cmdmod.cmod_flags & CMOD_CONFIRM)) && p_write)
{
# ifdef FEAT_TERMINAL
if (term_job_running(buf->b_term))
{
return term_confirm_stop(buf) == FAIL;
}
# endif
buf_T *buf2;
int count = 0;
if (flags & CCGD_ALLBUF)
FOR_ALL_BUFFERS(buf2)
if (bufIsChanged(buf2)
&& (buf2->b_ffname != NULL
# ifdef FEAT_BROWSE
|| (cmdmod.cmod_flags & CMOD_BROWSE)
# endif
))
++count;
if (!bufref_valid(&bufref))
// Autocommand deleted buffer, oops! It's not changed now.
return FALSE;
dialog_changed(buf, count > 1);
if (!bufref_valid(&bufref))
// Autocommand deleted buffer, oops! It's not changed now.
return FALSE;
return bufIsChanged(buf);
}
#endif
if (flags & CCGD_EXCMD)
no_write_message();
else
no_write_message_nobang(curbuf);
return TRUE;
}
return FALSE;
}
#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) || defined(PROTO)
#if defined(FEAT_BROWSE) || defined(PROTO)
/*
* When wanting to write a file without a file name, ask the user for a name.
*/
void
browse_save_fname(buf_T *buf)
{
if (buf->b_fname != NULL)
return;
char_u *fname;
fname = do_browse(BROWSE_SAVE, (char_u *)_("Save As"),
NULL, NULL, NULL, NULL, buf);
if (fname == NULL)
return;
if (setfname(buf, fname, NULL, TRUE) == OK)
buf->b_flags |= BF_NOTEDITED;
vim_free(fname);
}
#endif
#ifdef FEAT_GUI_MACVIM
/*
* "Save changes" dialog that conforms to the Apple HIG.
*/
static int
vim_dialog_save_changes(buf_T *buf)
{
char_u buff[IOSIZE];
dialog_msg(buff, _("Do you want to save the changes you made in the "
"document \"%s\"?"), buf->b_fname);
switch (do_dialog(VIM_QUESTION, buff,
(char_u*) _("Your changes will be lost if you don't save "
"them."),
(buf->b_fname != NULL)
? (char_u *)_("&Save\n&Cancel\n&Don't Save")
: (char_u *)_("&Save...\n&Cancel\n&Don't Save"),
1, NULL, FALSE))
{
case 1: return VIM_YES;
case 3: return VIM_NO;
}
return VIM_CANCEL;
}
/*
* "Save all changes" dialog that tries to emulate the above "Save changes"
* dialog for the case of several modified buffers.
*/
static int
vim_dialog_save_all_changes(buf_T *buf)
{
char_u buff[IOSIZE];
dialog_msg(buff, _("There are several documents with unsaved changes. "
"Do you want to save the changes you made in the "
"document \"%s\"?"), buf->b_fname);
switch (do_dialog(VIM_QUESTION, buff,
(char_u*) _("Your changes will be lost if you don't save "
"them."),
(char_u *)_("&Save\n&Don't Save\nS&ave All\nD&iscard All\n"
"&Cancel"),
1, NULL, FALSE))
{
case 1: return VIM_YES;
case 2: return VIM_NO;
case 3: return VIM_ALL;
case 4: return VIM_DISCARDALL;
}
return VIM_CANCEL;
}
#endif
/*
* Ask the user what to do when abandoning a changed buffer.
* Must check 'write' option first!
*/
void
dialog_changed(
buf_T *buf,
int checkall) // may abandon all changed buffers
{
char_u buff[DIALOG_MSG_SIZE];
int ret;
buf_T *buf2;
exarg_T ea;
#ifdef FEAT_GUI_MACVIM
/* Save dialogs on Mac OS X are standardized so in case the GUI is enabled
* and "c" isn't in 'guioptions' we use a OS X specific dialog. */
if (gui.in_use && vim_strchr(p_go, GO_CONDIALOG) == NULL)
{
if (checkall)
ret = vim_dialog_save_all_changes(buf);
else
ret = vim_dialog_save_changes(buf);
}
else
{
#endif
dialog_msg(buff, _("Save changes to \"%s\"?"), buf->b_fname);
if (checkall)
ret = vim_dialog_yesnoallcancel(VIM_QUESTION, NULL, buff, 1);
else
ret = vim_dialog_yesnocancel(VIM_QUESTION, NULL, buff, 1);
#ifdef FEAT_GUI_MACVIM
}
#endif
// Init ea pseudo-structure, this is needed for the check_overwrite()
// function.
CLEAR_FIELD(ea);
if (ret == VIM_YES)
{
int empty_bufname;
#ifdef FEAT_BROWSE
// May get file name, when there is none
browse_save_fname(buf);
#endif
empty_bufname = buf->b_fname == NULL ? TRUE : FALSE;
if (empty_bufname)
buf_set_name(buf->b_fnum, (char_u *)"Untitled");
if (check_overwrite(&ea, buf, buf->b_fname, buf->b_ffname, FALSE) == OK)
{
// didn't hit Cancel
if (buf_write_all(buf, FALSE) == OK)
return;
}
// restore to empty when write failed
if (empty_bufname)
{
buf->b_fname = NULL;
VIM_CLEAR(buf->b_ffname);
VIM_CLEAR(buf->b_sfname);
unchanged(buf, TRUE, FALSE);
}
}
else if (ret == VIM_NO)
{
unchanged(buf, TRUE, FALSE);
}
else if (ret == VIM_ALL)
{
/*
* Write all modified files that can be written.
* Skip readonly buffers, these need to be confirmed
* individually.
*/
FOR_ALL_BUFFERS(buf2)
{
if (bufIsChanged(buf2)
&& (buf2->b_ffname != NULL
#ifdef FEAT_BROWSE
|| (cmdmod.cmod_flags & CMOD_BROWSE)
#endif
)
&& !bt_dontwrite(buf2)
&& !buf2->b_p_ro)
{
bufref_T bufref;
set_bufref(&bufref, buf2);
#ifdef FEAT_BROWSE
// May get file name, when there is none
browse_save_fname(buf2);
#endif
if (buf2->b_fname != NULL && check_overwrite(&ea, buf2,
buf2->b_fname, buf2->b_ffname, FALSE) == OK)
// didn't hit Cancel
(void)buf_write_all(buf2, FALSE);
// an autocommand may have deleted the buffer
if (!bufref_valid(&bufref))
buf2 = firstbuf;
}
}
}
else if (ret == VIM_DISCARDALL)
{
/*
* mark all buffers as unchanged
*/
FOR_ALL_BUFFERS(buf2)
unchanged(buf2, TRUE, FALSE);
}
}
#endif
/*
* Return TRUE if the buffer "buf" can be abandoned, either by making it
* hidden, autowriting it or unloading it.
*/
int
can_abandon(buf_T *buf, int forceit)
{
return ( buf_hide(buf)
|| !bufIsChanged(buf)
|| buf->b_nwindows > 1
|| autowrite(buf, forceit) == OK
|| forceit);
}
/*
* Add a buffer number to "bufnrs", unless it's already there.
*/
static void
add_bufnum(int *bufnrs, int *bufnump, int nr)
{
int i;
for (i = 0; i < *bufnump; ++i)
if (bufnrs[i] == nr)
return;
bufnrs[*bufnump] = nr;
*bufnump = *bufnump + 1;
}
/*
* Return TRUE if any buffer was changed and cannot be abandoned.
* That changed buffer becomes the current buffer.
* When "unload" is TRUE the current buffer is unloaded instead of making it
* hidden. This is used for ":q!".
*/
int
check_changed_any(
int hidden, // Only check hidden buffers
int unload)
{
int ret = FALSE;
buf_T *buf;
int save;
int i;
int bufnum = 0;
int bufcount = 0;
int *bufnrs;
tabpage_T *tp;
win_T *wp;
// Make a list of all buffers, with the most important ones first.
FOR_ALL_BUFFERS(buf)
++bufcount;
if (bufcount == 0)
return FALSE;
bufnrs = ALLOC_MULT(int, bufcount);
if (bufnrs == NULL)
return FALSE;
// curbuf
bufnrs[bufnum++] = curbuf->b_fnum;
// buffers in current tab
FOR_ALL_WINDOWS(wp)
if (wp->w_buffer != curbuf)
add_bufnum(bufnrs, &bufnum, wp->w_buffer->b_fnum);
// buffers in other tabs
FOR_ALL_TABPAGES(tp)
if (tp != curtab)
FOR_ALL_WINDOWS_IN_TAB(tp, wp)
add_bufnum(bufnrs, &bufnum, wp->w_buffer->b_fnum);
// any other buffer
FOR_ALL_BUFFERS(buf)
add_bufnum(bufnrs, &bufnum, buf->b_fnum);
for (i = 0; i < bufnum; ++i)
{
buf = buflist_findnr(bufnrs[i]);
if (buf == NULL)
continue;
if ((!hidden || buf->b_nwindows == 0) && bufIsChanged(buf))
{
bufref_T bufref;
set_bufref(&bufref, buf);
#ifdef FEAT_TERMINAL
if (term_job_running(buf->b_term))
{
if (term_try_stop_job(buf) == FAIL)
break;
}
else
#endif
// Try auto-writing the buffer. If this fails but the buffer no
// longer exists it's not changed, that's OK.
if (check_changed(buf, (p_awa ? CCGD_AW : 0)
| CCGD_MULTWIN
| CCGD_ALLBUF) && bufref_valid(&bufref))
break; // didn't save - still changes
}
}
if (i >= bufnum)
goto theend;
// Get here if "buf" cannot be abandoned.
ret = TRUE;
exiting = FALSE;
#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
/*
* When ":confirm" used, don't give an error message.
*/
if (!(p_confirm || (cmdmod.cmod_flags & CMOD_CONFIRM)))
#endif
{
// There must be a wait_return() for this message, do_buffer()
// may cause a redraw. But wait_return() is a no-op when vgetc()
// is busy (Quit used from window menu), then make sure we don't
// cause a scroll up.
if (vgetc_busy > 0)
{
msg_row = cmdline_row;
msg_col = 0;
msg_didout = FALSE;
}
if (
#ifdef FEAT_TERMINAL
term_job_running(buf->b_term)
? semsg(_(e_job_still_running_in_buffer_str), buf->b_fname)
:
#endif
semsg(_(e_no_write_since_last_change_for_buffer_str),
buf_spname(buf) != NULL ? buf_spname(buf) : buf->b_fname))
{
save = no_wait_return;
no_wait_return = FALSE;
wait_return(FALSE);
no_wait_return = save;
}
}
// Try to find a window that contains the buffer.
if (buf != curbuf)
FOR_ALL_TAB_WINDOWS(tp, wp)
if (wp->w_buffer == buf)
{
bufref_T bufref;
set_bufref(&bufref, buf);
goto_tabpage_win(tp, wp);
// Paranoia: did autocmd wipe out the buffer with changes?
if (!bufref_valid(&bufref))
goto theend;
goto buf_found;
}
buf_found:
// Open the changed buffer in the current window.
if (buf != curbuf)
set_curbuf(buf, unload ? DOBUF_UNLOAD : DOBUF_GOTO);
theend:
vim_free(bufnrs);
return ret;
}
/*
* return FAIL if there is no file name, OK if there is one
* give error message for FAIL
*/
int
check_fname(void)
{
if (curbuf->b_ffname == NULL)
{
emsg(_(e_no_file_name));
return FAIL;
}
return OK;
}
/*
* flush the contents of a buffer, unless it has no file name
*
* return FAIL for failure, OK otherwise
*/
int
buf_write_all(buf_T *buf, int forceit)
{
int retval;
buf_T *old_curbuf = curbuf;
retval = (buf_write(buf, buf->b_ffname, buf->b_fname,
(linenr_T)1, buf->b_ml.ml_line_count, NULL,
FALSE, forceit, TRUE, FALSE));
if (curbuf != old_curbuf)
{
msg_source(HL_ATTR(HLF_W));
msg(_("Warning: Entered other buffer unexpectedly (check autocommands)"));
}
return retval;
}
/*
* ":argdo", ":windo", ":bufdo", ":tabdo", ":cdo", ":ldo", ":cfdo" and ":lfdo"
*/
void
ex_listdo(exarg_T *eap)
{
int i;
win_T *wp;
tabpage_T *tp;
buf_T *buf = curbuf;
int next_fnum = 0;
if (curwin->w_p_wfb)
{
if ((eap->cmdidx == CMD_ldo || eap->cmdidx == CMD_lfdo) &&
!eap->forceit)
{
// Disallow :ldo if 'winfixbuf' is applied
emsg(_(e_winfixbuf_cannot_go_to_buffer));
return;
}
if (win_valid(prevwin) && !prevwin->w_p_wfb)
// 'winfixbuf' is set; attempt to change to a window without it.
win_goto(prevwin);
if (curwin->w_p_wfb)
{
// Split the window, which will be 'nowinfixbuf', and set curwin to
// that
(void)win_split(0, 0);
if (curwin->w_p_wfb)
{
// Autocommands set 'winfixbuf' or sent us to another window
// with it set, or we failed to split the window. Give up.
emsg(_(e_winfixbuf_cannot_go_to_buffer));
return;
}
}
}
#if defined(FEAT_SYN_HL)
char_u *save_ei = NULL;
#endif
#ifdef FEAT_QUICKFIX
int qf_size = 0;
int qf_idx;
#endif
#ifndef FEAT_QUICKFIX
if (eap->cmdidx == CMD_cdo || eap->cmdidx == CMD_ldo ||
eap->cmdidx == CMD_cfdo || eap->cmdidx == CMD_lfdo)
{
ex_ni(eap);
return;
}
#endif
#if defined(FEAT_SYN_HL)
if (eap->cmdidx != CMD_windo && eap->cmdidx != CMD_tabdo)
{
// Don't do syntax HL autocommands. Skipping the syntax file is a
// great speed improvement.
save_ei = au_event_disable(",Syntax");
FOR_ALL_BUFFERS(buf)
buf->b_flags &= ~BF_SYN_SET;
buf = curbuf;
}
#endif
#ifdef FEAT_CLIPBOARD
start_global_changes();
#endif
if (eap->cmdidx == CMD_windo
|| eap->cmdidx == CMD_tabdo
|| buf_hide(curbuf)
|| !check_changed(curbuf, CCGD_AW
| (eap->forceit ? CCGD_FORCEIT : 0)
| CCGD_EXCMD))
{
i = 0;
// start at the eap->line1 argument/window/buffer
wp = firstwin;
tp = first_tabpage;
switch (eap->cmdidx)
{
case CMD_windo:
for ( ; wp != NULL && i + 1 < eap->line1; wp = wp->w_next)
i++;
break;
case CMD_tabdo:
for ( ; tp != NULL && i + 1 < eap->line1; tp = tp->tp_next)
i++;
break;
case CMD_argdo:
i = eap->line1 - 1;
break;
default:
break;
}
// set pcmark now
if (eap->cmdidx == CMD_bufdo)
{
// Advance to the first listed buffer after "eap->line1".
for (buf = firstbuf; buf != NULL && (buf->b_fnum < eap->line1
|| !buf->b_p_bl); buf = buf->b_next)
if (buf->b_fnum > eap->line2)
{
buf = NULL;
break;
}
if (buf != NULL)
goto_buffer(eap, DOBUF_FIRST, FORWARD, buf->b_fnum);
}
#ifdef FEAT_QUICKFIX
else if (eap->cmdidx == CMD_cdo || eap->cmdidx == CMD_ldo
|| eap->cmdidx == CMD_cfdo || eap->cmdidx == CMD_lfdo)
{
qf_size = qf_get_valid_size(eap);
if (qf_size <= 0 || eap->line1 > qf_size)
buf = NULL;
else
{
save_clear_shm_value();
ex_cc(eap);
restore_shm_value();
buf = curbuf;
i = eap->line1 - 1;
if (eap->addr_count <= 0)
// default is all the quickfix/location list entries
eap->line2 = qf_size;
}
}
#endif
else
setpcmark();
listcmd_busy = TRUE; // avoids setting pcmark below
while (!got_int && buf != NULL)
{
if (eap->cmdidx == CMD_argdo)
{
// go to argument "i"
if (i == ARGCOUNT)
break;
// Don't call do_argfile() when already there, it will try
// reloading the file.
if (curwin->w_arg_idx != i || !editing_arg_idx(curwin))
{
// Clear 'shm' to avoid that the file message overwrites
// any output from the command.
save_clear_shm_value();
do_argfile(eap, i);
restore_shm_value();
}
if (curwin->w_arg_idx != i)
break;
}
else if (eap->cmdidx == CMD_windo)
{
// go to window "wp"
if (!win_valid(wp))
break;
win_goto(wp);
if (curwin != wp)
break; // something must be wrong
wp = curwin->w_next;
}
else if (eap->cmdidx == CMD_tabdo)
{
// go to window "tp"
if (!valid_tabpage(tp))
break;
goto_tabpage_tp(tp, TRUE, TRUE);
tp = tp->tp_next;
}
else if (eap->cmdidx == CMD_bufdo)
{
// Remember the number of the next listed buffer, in case
// ":bwipe" is used or autocommands do something strange.
next_fnum = -1;
for (buf = curbuf->b_next; buf != NULL; buf = buf->b_next)
if (buf->b_p_bl)
{
next_fnum = buf->b_fnum;
break;
}
}
++i;
// execute the command
do_cmdline(eap->arg, eap->ea_getline, eap->cookie,
DOCMD_VERBOSE + DOCMD_NOWAIT);
if (eap->cmdidx == CMD_bufdo)
{
// Done?
if (next_fnum < 0 || next_fnum > eap->line2)
break;
// Check if the buffer still exists.
FOR_ALL_BUFFERS(buf)
if (buf->b_fnum == next_fnum)
break;
if (buf == NULL)
break;
// Go to the next buffer. Clear 'shm' to avoid that the file
// message overwrites any output from the command.
save_clear_shm_value();
goto_buffer(eap, DOBUF_FIRST, FORWARD, next_fnum);
restore_shm_value();
// If autocommands took us elsewhere, quit here.
if (curbuf->b_fnum != next_fnum)
break;
}
#ifdef FEAT_QUICKFIX
if (eap->cmdidx == CMD_cdo || eap->cmdidx == CMD_ldo
|| eap->cmdidx == CMD_cfdo || eap->cmdidx == CMD_lfdo)
{
if (i >= qf_size || i >= eap->line2)
break;
qf_idx = qf_get_cur_idx(eap);
save_clear_shm_value();
ex_cnext(eap);
restore_shm_value();
// If jumping to the next quickfix entry fails, quit here
if (qf_get_cur_idx(eap) == qf_idx)
break;
}
#endif
if (eap->cmdidx == CMD_windo)
{
validate_cursor(); // cursor may have moved
// required when 'scrollbind' has been set
if (curwin->w_p_scb)
do_check_scrollbind(TRUE);
}
if (eap->cmdidx == CMD_windo || eap->cmdidx == CMD_tabdo)
if (i+1 > eap->line2)
break;
if (eap->cmdidx == CMD_argdo && i >= eap->line2)
break;
}
listcmd_busy = FALSE;
}
#if defined(FEAT_SYN_HL)
if (save_ei != NULL)
{
buf_T *bnext;
aco_save_T aco;
au_event_restore(save_ei);
for (buf = firstbuf; buf != NULL; buf = bnext)
{
bnext = buf->b_next;
if (buf->b_nwindows > 0 && (buf->b_flags & BF_SYN_SET))
{
buf->b_flags &= ~BF_SYN_SET;
// buffer was opened while Syntax autocommands were disabled,
// need to trigger them now.
if (buf == curbuf)
apply_autocmds(EVENT_SYNTAX, curbuf->b_p_syn,
curbuf->b_fname, TRUE, curbuf);
else
{
aucmd_prepbuf(&aco, buf);
if (curbuf == buf)
{
apply_autocmds(EVENT_SYNTAX, buf->b_p_syn,
buf->b_fname, TRUE, buf);
aucmd_restbuf(&aco);
}
}
// start over, in case autocommands messed things up.
bnext = firstbuf;
}
}
}
#endif
#ifdef FEAT_CLIPBOARD
end_global_changes();
#endif
}
#ifdef FEAT_EVAL
/*
* ":compiler[!] {name}"
*/
void
ex_compiler(exarg_T *eap)
{
char_u *buf;
char_u *old_cur_comp = NULL;
char_u *p;
if (*eap->arg == NUL)
{
// List all compiler scripts.
do_cmdline_cmd((char_u *)"echo globpath(&rtp, 'compiler/*.vim')");
// ) keep the indenter happy...
return;
}
buf = alloc(STRLEN(eap->arg) + 14);
if (buf == NULL)
return;
if (eap->forceit)
{
// ":compiler! {name}" sets global options
do_cmdline_cmd((char_u *)
"command -nargs=* CompilerSet set <args>");
}
else
{
// ":compiler! {name}" sets local options.
// To remain backwards compatible "current_compiler" is always
// used. A user's compiler plugin may set it, the distributed
// plugin will then skip the settings. Afterwards set
// "b:current_compiler" and restore "current_compiler".
// Explicitly prepend "g:" to make it work in a function.
old_cur_comp = get_var_value((char_u *)"g:current_compiler");
if (old_cur_comp != NULL)
old_cur_comp = vim_strsave(old_cur_comp);
do_cmdline_cmd((char_u *)
"command -nargs=* -keepscript CompilerSet setlocal <args>");
}
do_unlet((char_u *)"g:current_compiler", TRUE);
do_unlet((char_u *)"b:current_compiler", TRUE);
sprintf((char *)buf, "compiler/%s.vim", eap->arg);
if (source_runtime(buf, DIP_ALL) == FAIL)
semsg(_(e_compiler_not_supported_str), eap->arg);
vim_free(buf);
do_cmdline_cmd((char_u *)":delcommand CompilerSet");
// Set "b:current_compiler" from "current_compiler".
p = get_var_value((char_u *)"g:current_compiler");
if (p != NULL)
set_internal_string_var((char_u *)"b:current_compiler", p);
// Restore "current_compiler" for ":compiler {name}".
if (!eap->forceit)
{
if (old_cur_comp != NULL)
{
set_internal_string_var((char_u *)"g:current_compiler",
old_cur_comp);
vim_free(old_cur_comp);
}
else
do_unlet((char_u *)"g:current_compiler", TRUE);
}
}
#endif
#if defined(FEAT_PYTHON3) || defined(FEAT_PYTHON) || defined(PROTO)
# if (defined(FEAT_PYTHON) && defined(FEAT_PYTHON3)) || defined(PROTO)
/*
* Detect Python 3 or 2, and initialize 'pyxversion'.
*/
void
init_pyxversion(void)
{
if (p_pyx == 0)
{
if (python3_enabled(FALSE))
p_pyx = 3;
else if (python_enabled(FALSE))
p_pyx = 2;
}
}
# endif
/*
* Does a file contain one of the following strings at the beginning of any
* line?
* "#!(any string)python2" => returns 2
* "#!(any string)python3" => returns 3
* "# requires python 2.x" => returns 2
* "# requires python 3.x" => returns 3
* otherwise return 0.
*/
static int
requires_py_version(char_u *filename)
{
FILE *file;
int requires_py_version = 0;
int i, lines;
lines = (int)p_mls;
if (lines < 0)
lines = 5;
file = mch_fopen((char *)filename, "r");
if (file == NULL)
return 0;
for (i = 0; i < lines; i++)
{
if (vim_fgets(IObuff, IOSIZE, file))
break;
if (i == 0 && IObuff[0] == '#' && IObuff[1] == '!')
{
// Check shebang.
if (strstr((char *)IObuff + 2, "python2") != NULL)
{
requires_py_version = 2;
break;
}
if (strstr((char *)IObuff + 2, "python3") != NULL)
{
requires_py_version = 3;
break;
}
}
IObuff[21] = '\0';
if (STRCMP("# requires python 2.x", IObuff) == 0)
{
requires_py_version = 2;
break;
}
if (STRCMP("# requires python 3.x", IObuff) == 0)
{
requires_py_version = 3;
break;
}
}
fclose(file);
return requires_py_version;
}
/*
* Source a python file using the requested python version.
*/
static void
source_pyx_file(exarg_T *eap, char_u *fname)
{
exarg_T ex;
int v = requires_py_version(fname);
# if defined(FEAT_PYTHON) && defined(FEAT_PYTHON3)
init_pyxversion();
# endif
if (v == 0)
{