[PATCH v5 2/7] Code cleanup: Make parts of print_command_1 public

[Jan Kratochvil <jan dot kratochvil at redhat dot com>]

The later 'compile print' command should share its behavior with the existing
'print' command.  Make the needed existing parts of print_command_1 public.

gdb/ChangeLog
2015-05-03  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* printcmd.c (struct format_data): Move it to valprint.h.
	(print_command_parse_format, print_value): New functions from ...
	(print_command_1): ... here.  Call them.
	* valprint.h (struct format_data): Move it here from printcmd.c.
	(print_command_parse_format, print_value): New declarations.
---
 gdb/printcmd.c |   97 +++++++++++++++++++++++++++++++-------------------------
 gdb/valprint.h |   15 +++++++++
 2 files changed, 68 insertions(+), 44 deletions(-)

diff --git a/gdb/printcmd.c b/gdb/printcmd.c
index deb501a..0ae402f 100644
--- a/gdb/printcmd.c
+++ b/gdb/printcmd.c
@@ -52,17 +52,6 @@
 #include "tui/tui.h"		/* For tui_active et al.   */
 #endif
 
-struct format_data
-  {
-    int count;
-    char format;
-    char size;
-
-    /* True if the value should be printed raw -- that is, bypassing
-       python-based formatters.  */
-    unsigned char raw;
-  };
-
 /* Last specified output format.  */
 
 static char last_format = 0;
@@ -939,6 +928,57 @@ validate_format (struct format_data fmt, const char *cmdname)
 	   fmt.format, cmdname);
 }
 
+/* Parse print command format string into *FMTP and update *EXPP.
+   CMDNAME should name the current command.  */
+
+void
+print_command_parse_format (const char **expp, const char *cmdname,
+			    struct format_data *fmtp)
+{
+  const char *exp = *expp;
+
+  if (exp && *exp == '/')
+    {
+      exp++;
+      *fmtp = decode_format (&exp, last_format, 0);
+      validate_format (*fmtp, cmdname);
+      last_format = fmtp->format;
+    }
+  else
+    {
+      fmtp->count = 1;
+      fmtp->format = 0;
+      fmtp->size = 0;
+      fmtp->raw = 0;
+    }
+
+  *expp = exp;
+}
+
+/* Print VAL to console according to *FMTP, including recording it to
+   the history.  */
+
+void
+print_value (struct value *val, const struct format_data *fmtp)
+{
+  struct value_print_options opts;
+  int histindex = record_latest_value (val);
+
+  annotate_value_history_begin (histindex, value_type (val));
+
+  printf_filtered ("$%d = ", histindex);
+
+  annotate_value_history_value ();
+
+  get_formatted_print_options (&opts, fmtp->format);
+  opts.raw = fmtp->raw;
+
+  print_formatted (val, fmtp->size, &opts, gdb_stdout);
+  printf_filtered ("\n");
+
+  annotate_value_history_end ();
+}
+
 /* Evaluate string EXP as an expression in the current language and
    print the resulting value.  EXP may contain a format specifier as the
    first argument ("/x myvar" for example, to print myvar in hex).  */
@@ -948,24 +988,10 @@ print_command_1 (const char *exp, int voidprint)
 {
   struct expression *expr;
   struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
-  char format = 0;
   struct value *val;
   struct format_data fmt;
 
-  if (exp && *exp == '/')
-    {
-      exp++;
-      fmt = decode_format (&exp, last_format, 0);
-      validate_format (fmt, "print");
-      last_format = format = fmt.format;
-    }
-  else
-    {
-      fmt.count = 1;
-      fmt.format = 0;
-      fmt.size = 0;
-      fmt.raw = 0;
-    }
+  print_command_parse_format (&exp, "print", &fmt);
 
   if (exp && *exp)
     {
@@ -978,24 +1004,7 @@ print_command_1 (const char *exp, int voidprint)
 
   if (voidprint || (val && value_type (val) &&
 		    TYPE_CODE (value_type (val)) != TYPE_CODE_VOID))
-    {
-      struct value_print_options opts;
-      int histindex = record_latest_value (val);
-
-      annotate_value_history_begin (histindex, value_type (val));
-
-      printf_filtered ("$%d = ", histindex);
-
-      annotate_value_history_value ();
-
-      get_formatted_print_options (&opts, format);
-      opts.raw = fmt.raw;
-
-      print_formatted (val, fmt.size, &opts, gdb_stdout);
-      printf_filtered ("\n");
-
-      annotate_value_history_end ();
-    }
+    print_value (val, &fmt);
 
   do_cleanups (old_chain);
 }
diff --git a/gdb/valprint.h b/gdb/valprint.h
index e3d0137..ed4964f 100644
--- a/gdb/valprint.h
+++ b/gdb/valprint.h
@@ -217,4 +217,19 @@ extern void output_command_const (const char *args, int from_tty);
 
 extern int val_print_scalar_type_p (struct type *type);
 
+struct format_data
+  {
+    int count;
+    char format;
+    char size;
+
+    /* True if the value should be printed raw -- that is, bypassing
+       python-based formatters.  */
+    unsigned char raw;
+  };
+
+extern void print_command_parse_format (const char **expp, const char *cmdname,
+					struct format_data *fmtp);
+extern void print_value (struct value *val, const struct format_data *fmtp);
+
 #endif