Add serialization syntax documentation. Clarify naming and wording in --help-output...

diff --git a/util/options.cc b/util/options.cc
index 7387a56..c5b619d 100644 (file)
--- a/util/options.cc
+++ b/util/options.cc
@@ -440,11 +440,13 @@ output_options_t::add_options (option_parser_t *parser)
   const char *text;
 
   if (NULL == supported_formats)
-    text = "Set output format";
+    text = "Set output serialization format";
   else
   {
     char *items = g_strjoinv ("/", const_cast<char **> (supported_formats));
-    text = g_strdup_printf ("Set output format\n\n    Supported output formats are: %s", items);
+    text = g_strdup_printf ("Set output serialization format\n\n    Supported output formats are: %s\n%s", items,
+      "      text: [<glyph name or index>=<glyph cluster index within input>@<horizontal displacement>,<vertical displacement>+<horizontal advance>,<vertical advance>|...]\n"
+      "      json: [{\"g\": <glyph name or index>, \"ax\": <horizontal advance>, \"ay\": <vertical advance>, \"dx\": <horizontal displacement>, \"dy\": <vertical displacement>, \"cl\": <glyph cluster index within input>}, ...]");
     g_free (items);
     parser->free_later ((char *) text);
   }
@@ -457,8 +459,8 @@ output_options_t::add_options (option_parser_t *parser)
   };
   parser->add_group (entries,
                     "output",
-                    "Output options:",
-                    "Options controlling the output",
+                    "Output detination & format options (refer to --help-output-content for content options):",
+                    "Options controlling the destination and form of the output",
                     this);
 }
 
@@ -694,19 +696,19 @@ format_options_t::add_options (option_parser_t *parser)
 {
   GOptionEntry entries[] =
   {
-    {"no-glyph-names", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE,    &this->show_glyph_names,        "Use glyph indices instead of names",   NULL},
-    {"no-positions",   0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE,    &this->show_positions,          "Do not show glyph positions",          NULL},
-    {"no-clusters",    0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE,    &this->show_clusters,           "Do not show cluster mapping",          NULL},
-    {"show-text",      0, 0,                     G_OPTION_ARG_NONE,    &this->show_text,               "Show input text",                      NULL},
-    {"show-unicode",   0, 0,                     G_OPTION_ARG_NONE,    &this->show_unicode,            "Show input Unicode codepoints",        NULL},
-    {"show-line-num",  0, 0,                     G_OPTION_ARG_NONE,    &this->show_line_num,           "Show line numbers",                    NULL},
-    {"verbose",                0, G_OPTION_FLAG_NO_ARG,  G_OPTION_ARG_CALLBACK,(gpointer) &parse_verbose,      "Show everything",                      NULL},
+    {"show-text", 0, 0, G_OPTION_ARG_NONE, &this->show_text, "Prefix each line of output with its corresponding input text", NULL},
+    {"show-unicode", 0, 0, G_OPTION_ARG_NONE, &this->show_unicode, "Prefix each line of output with its corresponding input codepoint(s)", NULL},
+    {"show-line-num", 0, 0, G_OPTION_ARG_NONE, &this->show_line_num, "Prefix each line of output with its corresponding input line number", NULL},
+    {"verbose", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) &parse_verbose, "Prefix each line of output with each of the above", NULL},
+    {"no-glyph-names", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_glyph_names, "Output glyph indices instead of names", NULL},
+    {"no-positions", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_positions, "Do not output glyph positions", NULL},
+    {"no-clusters",    0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_clusters, "Do not output cluster indices", NULL},
     {NULL}
   };
   parser->add_group (entries,
-                    "format",
-                    "Format options:",
-                    "Options controlling the formatting of buffer contents",
+                    "output-content",
+                    "Output content options (refer to --help-output for output syntax):",
+                    "Options controlling the content of the output",
                     this);
 }