From: Raphaël Droz <raphael.droz+floss@gmail.com>
Date: Tue, 30 Aug 2011 14:20:39 +0000 (+0200)
Subject: custom output format (2/4): item-based and the other database-based output functions
X-Git-Tag: upstream/0.6.1~2^2~51
X-Git-Url: https://git.deb.at/?p=pkg%2Fabook.git;a=commitdiff_plain;h=c6c64f87def0694eb80ecc10fde881a203e82fcf

custom output format (2/4): item-based and the other database-based output functions

* custom_export_database() takes care of building a field_types pointer
  from the format string by calling parse_custom_format().
* custom_export_item() output each entry according to the format string
  itself + the associated *field_types.

The default value for custom_format is: "{nick} ({name}): {mobile}"
---

diff --git a/abook.c b/abook.c
index e9f8841..9f95655 100644
--- a/abook.c
+++ b/abook.c
@@ -50,6 +50,10 @@ static void		add_email(int);
 char *datafile = NULL;
 static char *rcfile = NULL;
 
+// custom formatting
+char custom_format[FORMAT_STRING_LEN] = "{nick} ({name}): {mobile}";
+char *parsed_custom_format = NULL;
+enum field_types *custom_format_fields = 0;
 struct abook_output_item_filter selected_item_filter;
 
 bool alternative_datafile = FALSE;
diff --git a/filter.c b/filter.c
index 1fb95ed..a58868c 100644
--- a/filter.c
+++ b/filter.c
@@ -66,6 +66,7 @@ static int	text_export_database(FILE *out, struct db_enumerator e);
 static int	spruce_export_database(FILE *out, struct db_enumerator e);
 static int	wl_export_database(FILE *out, struct db_enumerator e);
 static int	bsdcal_export_database(FILE *out, struct db_enumerator e);
+static int	custom_export_database(FILE *out, struct db_enumerator e);
 
 /*
  * end of function declarations
@@ -2415,6 +2416,93 @@ parse_custom_format(char *s, char *fmt_string, enum field_types *ft)
 	*ft = 66;
 }
 
+static int
+custom_export_item(FILE *out, int item, char *s, enum field_types *ft);
+
+
+// used to store the format string from --outformatstr when "custom" format is used
+// default value overriden in export_file()
+extern char *parsed_custom_format;
+extern enum field_types *custom_format_fields;
+
+/* wrapper for custom_export_item:
+   1) avoid messing with extern pointer
+   2) adds \n
+   3) follow the prototype needed for an abook_output_item_filter entry */
+void
+custom_print_item(FILE *out, int item)
+{
+
+  if(custom_export_item(out, item, parsed_custom_format, custom_format_fields) == 0)
+    fprintf(out, "\n");
+}
+
+static int
+custom_export_item(FILE *out, int item, char *fmt, enum field_types *ft)
+{
+  char *p, *q = 0;
+
+  // if the first character is '!':
+  // we first check that all fields exist before continuing
+  if(*fmt == '!') {
+    enum field_types *ftp = ft;
+    while(*ft != 66) {
+      if(! db_fget(item, *ft) )
+	return 1;
+      ft++;
+    }
+    ft = ftp;
+    fmt++;
+  }
+
+  while (*fmt) {
+    if(!strncmp(fmt, "%s", 2)) {
+      fprintf(out, "%s", safe_str(db_fget(item, *ft)));
+      ft++;
+      fmt+=2;
+    } else if (*ft == 66) {
+      fprintf(out, "%s", fmt);
+      return 0;
+    } else {
+      p = strchr(fmt, '%');
+      if(*p) {
+	q = strndup(fmt, (size_t)(p-fmt));
+	fprintf(out, "%s", q);
+	free(q);
+	fmt = p;
+      }
+      else {
+	fprintf(out, "%s", fmt);
+	return 0;
+      }
+    }
+  }
+
+  return 0;
+}
+
+// used to store the format string from --outformatstr when "custom" format is used
+// default value overriden from abook.c
+extern char custom_format[FORMAT_STRING_LEN];
+
+static int
+custom_export_database(FILE *out, struct db_enumerator e)
+{
+	char *format_string =
+	  (char *)malloc(FORMAT_STRING_LEN * sizeof(char*));
+
+	enum field_types *ft =
+	  (enum field_types *)malloc(FORMAT_STRING_MAX_FIELDS * sizeof(enum field_types *));
+
+	parse_custom_format(custom_format, format_string, ft);
+
+	db_enumerate_items(e) {
+	  if(custom_export_item(out, e.item, format_string, ft) == 0)
+	    fprintf(out, "\n");
+	}
+	return 0;
+}
+
 /*
  * end of BSD calendar export filter
  */
diff --git a/filter.h b/filter.h
index 796df5f..548bf7a 100644
--- a/filter.h
+++ b/filter.h
@@ -5,6 +5,7 @@
 
 #define		FILTNAME_LEN	8
 #define		FORMAT_STRING_LEN	128
+#define		FORMAT_STRING_MAX_FIELDS	16
 
 
 struct abook_output_filter {
@@ -39,6 +40,7 @@ void		e_write_item(FILE *out, int item, void (*func) (FILE *in, int item));
 void		muttq_print_item(FILE *file, int item);
 
 void		parse_custom_format(char *s, char *fmt_string, enum field_types *ft);
+void		custom_print_item(FILE *out, int item);
 
 int		fexport(char filtname[FILTNAME_LEN], FILE *handle,
 		int enum_mode);