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4a583683e5
Original commit message from CVS: Merged from INCSCHED on 200505251!!!
203 lines
5.9 KiB
C
203 lines
5.9 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <parser.h>
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#include <glib.h>
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#include "config.h"
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typedef struct {
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gchar *name;
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GSList *srcpads;
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GSList *sinkpads;
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GSList *srcpadtemplates;
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GSList *sinkpadtemplates;
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GSList *arguments;
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} comp_element;
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enum {
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ARG_INT,
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ARG_FILENAME,
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ARG_ENUM
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};
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typedef struct {
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gchar *name;
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int type;
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GSList *enums;
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} comp_argument;
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typedef struct {
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gint value;
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gchar *nick;
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} enum_value;
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void print_match_list (gchar *prefix, int len, GSList *wordlist) {
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GSList *words = wordlist;
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while (words) {
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if (!len || !strncmp((gchar *)(words->data), prefix, len))
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printf("%s\n",(gchar *)(words->data));
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words = g_slist_next (words);
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}
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}
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int match_element (comp_element *element, gchar *name) {
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return strcmp(element->name,name);
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}
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int main(int argc,char *argv[]) {
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xmlDocPtr doc;
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xmlNodePtr rootnode, elementnode, propnode, argnode;
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GList *element_list = NULL;
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comp_element *element;
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GSList *element_names = NULL;
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comp_argument *argument;
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enum_value *option;
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gchar *prev_word = argv[3];
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gchar *partial_word = argv[2];
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int partial_len = strlen(partial_word);
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GList *elements;
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GSList *pads;
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int num_pads;
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GSList *args;
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gchar *word;
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GSList *words = NULL;
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/***** Loading the completion information from the registry *****/
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doc = xmlParseFile (GST_CONFIG_DIR "/compreg.xml");
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rootnode = doc->xmlRootNode;
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elementnode = rootnode->xmlChildrenNode;
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while (elementnode) {
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if (!strcmp(elementnode->name, "element")) {
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element = g_new0(comp_element,1);
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propnode = elementnode->xmlChildrenNode;
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while (propnode) {
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if (!strcmp(propnode->name, "name")) {
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element->name = xmlNodeGetContent(propnode);
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//fprintf(stderr,element->name);
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} else if (!strcmp(propnode->name, "srcpad")) {
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element->srcpads = g_slist_prepend(element->srcpads, xmlNodeGetContent(propnode));
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//fprintf(stderr,".");
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} else if (!strcmp(propnode->name, "sinkpad")) {
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element->sinkpads = g_slist_prepend(element->sinkpads, xmlNodeGetContent(propnode));
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} else if (!strcmp(propnode->name, "srcpadtemplate")) {
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element->srcpadtemplates = g_slist_prepend(element->srcpadtemplates, xmlNodeGetContent(propnode));
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//fprintf(stderr,".");
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} else if (!strcmp(propnode->name, "sinkpad")) {
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element->sinkpadtemplates = g_slist_prepend(element->sinkpadtemplates, xmlNodeGetContent(propnode));
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} else if (!strcmp(propnode->name, "argument")) {
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argument = g_new0(comp_argument,1);
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argument->name = xmlNodeGetContent(propnode);
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argument->type = ARG_INT;
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// walk through the values data
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argnode = propnode->xmlChildrenNode;
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while (argnode) {
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if (!strcmp(argnode->name, "filename")) {
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argument->type = ARG_FILENAME;
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} else if (!strcmp(argnode->name,"option")) {
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argument->type = ARG_ENUM;
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option = g_new0(enum_value,1);
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sscanf(xmlNodeGetContent(argnode),"%d",&option->value);
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argument->enums = g_slist_prepend (argument->enums, option);
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}
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argnode = argnode->next;
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}
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element->arguments = g_slist_prepend(element->arguments, argument);
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}
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propnode = propnode->next;
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}
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element_list = g_list_prepend(element_list, element);
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element_names = g_slist_prepend(element_names, element->name);
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}
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elementnode = elementnode->next;
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}
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/***** Completion *****/
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/* The bulk of the work is in deciding exactly which words are an option. */
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// if we're right at the beginning, with -launch in the first word
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if (strstr(prev_word,"-launch")) {
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// print out only elements with no sink pad or padtemplate
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elements = element_list;
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while (elements) {
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element = (comp_element *)(elements->data);
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if (!element->sinkpads && !element->sinkpadtemplates)
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words = g_slist_prepend (words, element->name);
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elements = g_list_next(elements);
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}
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}
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// if the previous word is a connection
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if (strchr(prev_word, '!')) {
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// print out oly elements with a sink pad or template
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elements = element_list;
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while (elements) {
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element = (comp_element *)(elements->data);
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if (element->sinkpads || element->sinkpadtemplates)
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words = g_slist_prepend (words, element->name);
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elements = g_list_next (elements);
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}
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}
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// if the partial word is an argument, and it's an enum
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if (strchr(prev_word,'=')) {
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fprintf(stderr,"it's an arg, but dunno what element yet\n");
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}
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// if the previous word is an element, we need to list both pads and arguments
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if ((elements = g_list_find_custom(element_list, prev_word, (GCompareFunc)match_element))) {
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element = elements->data;
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// zero the numpads list so we can count them
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num_pads = 0;
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// pads
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pads = element->srcpads;
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while (pads) {
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num_pads++;
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words = g_slist_prepend (words, g_strdup_printf("%s!",(gchar *)(pads->data)));
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pads = g_slist_next (pads);
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}
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// padtemplates
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pads = element->srcpadtemplates;
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while (pads) {
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num_pads++;
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word = g_strdup_printf("%s!",(gchar *)(pads->data));
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if (!g_slist_find_custom(words,word,(GCompareFunc)strcmp))
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words = g_slist_prepend (words, word);
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pads = g_slist_next (pads);
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}
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// if there is only one pad, add '!' to the list of completions
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if (num_pads == 1) {
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words = g_slist_prepend (words, "!");
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}
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// arguments
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args = element->arguments;
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while (args) {
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argument = (comp_argument *)(args->data);
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word = strstr(argument->name,"::")+2;
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words = g_slist_prepend (words, g_strdup_printf("%s=",word));
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words = g_slist_prepend (words, g_strdup_printf("%s=...",word));
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args = g_slist_next (args);
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}
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}
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/* The easy part is ouptuting the correct list of possibilities. */
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print_match_list (partial_word, partial_len, words);
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return 0;
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}
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