#include "gettext.h"
#define _(msgid) gettext (msgid)
-/* Global variables. */
-struct string getl_buf;
-struct getl_script *getl_head;
-struct getl_script *getl_tail;
-int getl_interactive;
-int getl_welcomed;
-int getl_mode;
-int getl_prompt;
-
-#if HAVE_LIBREADLINE
-#include <readline/readline.h>
-#endif
-
-#if HAVE_LIBHISTORY
-static char *history_file;
-
-#if HAVE_READLINE_HISTORY_H
-#include <readline/history.h>
-#else /* no readline/history.h */
-extern void add_history (char *);
-extern void using_history (void);
-extern int read_history (char *);
-extern void stifle_history (int);
-extern int write_history (char *);
-#endif /* no readline/history.h */
-#endif /* -lhistory */
-
-
-extern struct cmd_set cmd;
-
static struct string getl_include_path;
/* Number of levels of DO REPEAT structures we're nested inside. If
performed. */
static int DO_REPEAT_level;
-static int read_console (void);
+struct string getl_buf;
+
/* Initialize getl. */
void
ds_create (&getl_include_path,
fn_getenv_default ("STAT_INCLUDE_PATH", include_path));
ds_init (&getl_buf, 256);
-#if HAVE_LIBREADLINE
- rl_completion_entry_function = pspp_completion_function;
-#endif
}
-/* Close getl. */
-void
-getl_uninitialize (void)
-{
- getl_close_all();
-#if HAVE_LIBHISTORY && defined (unix)
- if (history_file)
- write_history (history_file);
-#endif
- ds_destroy (&getl_buf);
- ds_destroy (&getl_include_path);
-}
+
+
+struct getl_script *getl_head;
+struct getl_script *getl_tail;
+
/* Returns a string that represents the directory that the syntax file
currently being read resides in. If there is no syntax file then
void
getl_add_DO_REPEAT_file (struct getl_script *file)
{
- /* getl_head == NULL can't happen. */
assert (getl_head);
DO_REPEAT_level++;
file->f = NULL;
}
-/* Display a welcoming message. */
-static void
-welcome (void)
-{
- getl_welcomed = 1;
- fputs ("PSPP is free software and you are welcome to distribute copies of "
- "it\nunder certain conditions; type \"show copying.\" to see the "
- "conditions.\nThere is ABSOLUTELY NO WARRANTY for PSPP; type \"show "
- "warranty.\" for details.\n", stdout);
- puts (stat_version);
-}
-
-/* Reads a single line from the user's terminal. */
-
-/* From repeat.c. */
-extern void perform_DO_REPEAT_substitutions (void);
-
/* Reads a single line from the line buffer associated with getl_head.
Returns 1 if a line was successfully read or 0 if no more lines are
available. */
-static int
-handle_line_buffer (void)
+int
+getl_handle_line_buffer (void)
{
struct getl_script *s = getl_head;
return 1;
}
-/* Reads a single line into getl_buf from the list of files. Will not
- read from the eof of one file to the beginning of another unless
- the options field on the new file's getl_script is nonzero. Return
- zero on eof. */
-int
-getl_read_line (void)
-{
- getl_mode = GETL_MODE_BATCH;
-
- while (getl_head)
- {
- struct getl_script *s = getl_head;
-
- ds_clear (&getl_buf);
- if (s->separate)
- return 0;
-
- if (s->first_line)
- {
- if (!handle_line_buffer ())
- {
- getl_close_file ();
- continue;
- }
- perform_DO_REPEAT_substitutions ();
- if (getl_head->print)
- tab_output_text (TAB_LEFT | TAT_FIX | TAT_PRINTF, "+%s",
- ds_c_str (&getl_buf));
- return 1;
- }
-
- if (s->f == NULL)
- {
- msg (VM (1), _("%s: Opening as syntax file."), s->fn);
- s->f = fn_open (s->fn, "r");
-
- if (s->f == NULL)
- {
- msg (ME, _("Opening `%s': %s."), s->fn, strerror (errno));
- getl_close_file ();
- continue;
- }
- }
-
- if (!ds_gets (&getl_buf, s->f))
- {
- if (ferror (s->f))
- msg (ME, _("Reading `%s': %s."), s->fn, strerror (errno));
- getl_close_file ();
- continue;
- }
- if (ds_length (&getl_buf) > 0 && ds_end (&getl_buf)[-1] == '\n')
- ds_truncate (&getl_buf, ds_length (&getl_buf) - 1);
-
- if (get_echo())
- tab_output_text (TAB_LEFT | TAT_FIX, ds_c_str (&getl_buf));
-
- getl_head->ln++;
-
- /* Allows shebang invocation: `#! /usr/local/bin/pspp'. */
- if (ds_c_str (&getl_buf)[0] == '#'
- && ds_c_str (&getl_buf)[1] == '!')
- continue;
-
- return 1;
- }
-
- if (getl_interactive == 0)
- return 0;
-
- getl_mode = GETL_MODE_INTERACTIVE;
-
- if (getl_welcomed == 0)
- welcome ();
-
- return read_console ();
-}
-
/* Closes the current file, whether it be a main file or included
file, then moves getl_head to the next file in the chain. */
void
free (s);
}
-/* PORTME: Adapt to your local system's idea of the terminal. */
-#if HAVE_LIBREADLINE
-
-#if HAVE_READLINE_READLINE_H
-#include <readline/readline.h>
-#else /* no readline/readline.h */
-extern char *readline (char *);
-#endif /* no readline/readline.h */
-
-static int
-read_console (void)
+/* Closes all files. */
+void
+getl_close_all (void)
{
- char *line;
- const char *prompt;
-
- err_error_count = err_warning_count = 0;
- err_already_flagged = 0;
+ while (getl_head)
+ getl_close_file ();
+}
-#if HAVE_LIBHISTORY
- if (!history_file)
- {
-#ifdef unix
- history_file = tilde_expand (HISTORY_FILE);
-#endif
- using_history ();
- read_history (history_file);
- stifle_history (MAX_HISTORY);
- }
-#endif /* -lhistory */
+bool
+getl_is_separate(void)
+{
+ return (getl_head && getl_head->separate);
+}
- switch (getl_prompt)
- {
- case GETL_PRPT_STANDARD:
- prompt = get_prompt ();
- break;
+void
+getl_set_separate(bool sep)
+{
+ assert (getl_head);
- case GETL_PRPT_CONTINUATION:
- prompt = get_cprompt ();
- break;
+ getl_head->separate = sep ;
+}
- case GETL_PRPT_DATA:
- prompt = get_dprompt ();
- break;
- default:
- assert (0);
- abort ();
- }
+/* Puts the current file and line number in *FN and *LN, respectively,
+ or NULL and -1 if none. */
+void
+getl_location (const char **fn, int *ln)
+{
+ if (fn != NULL)
+ *fn = getl_head ? getl_head->fn : NULL;
+ if (ln != NULL)
+ *ln = getl_head ? getl_head->ln : -1;
+}
- line = readline (prompt);
- if (!line)
- return 0;
+bool
+getl_reading_script (void)
+{
+ return (getl_head != NULL);
+}
-#if HAVE_LIBHISTORY
- if (*line)
- add_history (line);
-#endif
+/* File locator stack. */
+static const struct file_locator **file_loc;
+static int nfile_loc, mfile_loc;
+\f
+/* Close getl. */
+void
+getl_uninitialize (void)
+{
+ getl_close_all();
+ ds_destroy (&getl_buf);
+ ds_destroy (&getl_include_path);
+ free(file_loc);
+ file_loc = NULL;
+ nfile_loc = mfile_loc = 0;
+}
- ds_clear (&getl_buf);
- ds_puts (&getl_buf, line);
- free (line);
+/* File locator stack functions. */
- return 1;
-}
-#else /* no -lreadline */
-static int
-read_console (void)
+/* Pushes F onto the stack of file locations. */
+void
+err_push_file_locator (const struct file_locator *f)
{
- err_error_count = err_warning_count = 0;
- err_already_flagged = 0;
-
- fputs (getl_prompt ? get_cprompt() : get_prompt(), stdout);
- ds_clear (&getl_buf);
- if (ds_gets (&getl_buf, stdin))
- return 1;
+ if (nfile_loc >= mfile_loc)
+ {
+ if (mfile_loc == 0)
+ mfile_loc = 8;
+ else
+ mfile_loc *= 2;
- if (ferror (stdin))
- msg (FE, "stdin: fgets(): %s.", strerror (errno));
+ file_loc = xnrealloc (file_loc, mfile_loc, sizeof *file_loc);
+ }
- return 0;
+ file_loc[nfile_loc++] = f;
}
-#endif /* no -lreadline */
-/* Closes all files. */
+/* Pops F off the stack of file locations.
+ Argument F is only used for verification that that is actually the
+ item on top of the stack. */
void
-getl_close_all (void)
-{
- while (getl_head)
- getl_close_file ();
-}
-
-/* Sets the options flag of the current script to 0, thus allowing it
- to be read in. Returns nonzero if this action was taken, zero
- otherwise. */
-int
-getl_perform_delayed_reset (void)
+err_pop_file_locator (const struct file_locator *f)
{
- if (getl_head && getl_head->separate)
- {
- getl_head->separate = 0;
- discard_variables ();
- lex_reset_eof ();
- return 1;
- }
- return 0;
+ assert (nfile_loc >= 0 && file_loc[nfile_loc - 1] == f);
+ nfile_loc--;
}
-/* Puts the current file and line number in *FN and *LN, respectively,
- or NULL and -1 if none. */
+/* Puts the current file and line number in F, or NULL and -1 if
+ none. */
void
-getl_location (const char **fn, int *ln)
+err_location (struct file_locator *f)
{
- if (fn != NULL)
- *fn = getl_head ? getl_head->fn : NULL;
- if (ln != NULL)
- *ln = getl_head ? getl_head->ln : -1;
+ if (nfile_loc)
+ *f = *file_loc[nfile_loc - 1];
+ else
+ getl_location (&f->filename, &f->line_number);
}
+
+
projects / pspp / blobdiff