Add tab-completion for \unset and valid setting values of psql variables.
This commit also changes tab-completion for \set so that it displays all the special variables like COMP_KEYWORD_CASE. Previously it displayed only variables having the set values. Which was not user-friendly for those who want to set the unset variables. This commit also changes tab-completion for :variable so that only the variables having the set values are displayed. Previously even unset variables were displayed. Pavel Stehule, modified by me.
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@ -2827,7 +2827,9 @@ bar
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they are sent to the server. The switch for this is
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<option>-e</option>. If set to <literal>errors</literal> then only
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failed queries are displayed on standard error output. The switch
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for this is <option>-b</option>.
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for this is <option>-b</option>. If unset, or if set to
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<literal>none</literal> (or any other value than those above) then
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no queries are displayed.
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</para>
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</listitem>
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</varlistentry>
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@ -2892,8 +2894,9 @@ bar
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list. If set to a value of <literal>ignoredups</literal>, lines
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matching the previous history line are not entered. A value of
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<literal>ignoreboth</literal> combines the two options. If
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unset, or if set to any other value than those above, all lines
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read in interactive mode are saved on the history list.
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unset, or if set to <literal>none</literal> (or any other value
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than those above), all lines read in interactive mode are
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saved on the history list.
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</para>
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<note>
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<para>
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@ -813,8 +813,11 @@ static char *_complete_from_query(int is_schema_query,
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const char *text, int state);
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static char *complete_from_list(const char *text, int state);
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static char *complete_from_const(const char *text, int state);
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static char **complete_from_variables(const char *text,
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static void append_variable_names(char ***varnames, int *nvars,
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int *maxvars, const char *varname,
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const char *prefix, const char *suffix);
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static char **complete_from_variables(const char *text,
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const char *prefix, const char *suffix, bool need_value);
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static char *complete_from_files(const char *text, int state);
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static char *pg_strdup_keyword_case(const char *s, const char *ref);
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@ -925,11 +928,11 @@ psql_completion(const char *text, int start, int end)
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else if (text[0] == ':' && text[1] != ':')
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{
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if (text[1] == '\'')
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matches = complete_from_variables(text, ":'", "'");
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matches = complete_from_variables(text, ":'", "'", true);
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else if (text[1] == '"')
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matches = complete_from_variables(text, ":\"", "\"");
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matches = complete_from_variables(text, ":\"", "\"", true);
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else
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matches = complete_from_variables(text, ":", "");
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matches = complete_from_variables(text, ":", "", true);
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}
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/* If no previous word, suggest one of the basic sql commands */
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@ -3604,9 +3607,71 @@ psql_completion(const char *text, int start, int end)
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COMPLETE_WITH_LIST_CS(my_list);
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}
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}
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else if (strcmp(prev_wd, "\\unset") == 0)
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{
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matches = complete_from_variables(text, "", "", true);
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}
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else if (strcmp(prev_wd, "\\set") == 0)
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{
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matches = complete_from_variables(text, "", "");
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matches = complete_from_variables(text, "", "", false);
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}
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else if (strcmp(prev2_wd, "\\set") == 0)
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{
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static const char *const boolean_value_list[] =
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{"on", "off", NULL};
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if (strcmp(prev_wd, "AUTOCOMMIT") == 0)
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COMPLETE_WITH_LIST_CS(boolean_value_list);
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else if (strcmp(prev_wd, "COMP_KEYWORD_CASE") == 0)
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{
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static const char *const my_list[] =
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{"lower", "upper", "preserve-lower", "preserve-upper", NULL};
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COMPLETE_WITH_LIST_CS(my_list);
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}
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else if (strcmp(prev_wd, "ECHO") == 0)
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{
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static const char *const my_list[] =
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{"errors", "queries", "all", "none", NULL};
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COMPLETE_WITH_LIST_CS(my_list);
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}
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else if (strcmp(prev_wd, "ECHO_HIDDEN") == 0)
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{
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static const char *const my_list[] =
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{"noexec", "off", "on", NULL};
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COMPLETE_WITH_LIST_CS(my_list);
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}
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else if (strcmp(prev_wd, "HISTCONTROL") == 0)
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{
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static const char *const my_list[] =
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{"ignorespace", "ignoredups", "ignoreboth", "none", NULL};
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COMPLETE_WITH_LIST_CS(my_list);
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}
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else if (strcmp(prev_wd, "ON_ERROR_ROLLBACK") == 0)
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{
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static const char *const my_list[] =
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{"on", "off", "interactive", NULL};
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COMPLETE_WITH_LIST_CS(my_list);
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}
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else if (strcmp(prev_wd, "ON_ERROR_STOP") == 0)
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COMPLETE_WITH_LIST_CS(boolean_value_list);
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else if (strcmp(prev_wd, "QUIET") == 0)
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COMPLETE_WITH_LIST_CS(boolean_value_list);
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else if (strcmp(prev_wd, "SINGLELINE") == 0)
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COMPLETE_WITH_LIST_CS(boolean_value_list);
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else if (strcmp(prev_wd, "SINGLESTEP") == 0)
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COMPLETE_WITH_LIST_CS(boolean_value_list);
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else if (strcmp(prev_wd, "VERBOSITY") == 0)
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{
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static const char *const my_list[] =
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{"default", "verbose", "terse", NULL};
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COMPLETE_WITH_LIST_CS(my_list);
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}
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}
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else if (strcmp(prev_wd, "\\sf") == 0 || strcmp(prev_wd, "\\sf+") == 0)
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COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_functions, NULL);
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@ -4052,13 +4117,40 @@ complete_from_const(const char *text, int state)
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}
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/*
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* This function appends the variable name with prefix and suffix to
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* the variable names array.
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*/
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static void
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append_variable_names(char ***varnames, int *nvars,
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int *maxvars, const char *varname,
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const char *prefix, const char *suffix)
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{
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if (*nvars >= *maxvars)
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{
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*maxvars *= 2;
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*varnames = (char **) realloc(*varnames,
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((*maxvars) + 1) * sizeof(char *));
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if (!(*varnames))
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{
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psql_error("out of memory\n");
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exit(EXIT_FAILURE);
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}
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}
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(*varnames)[(*nvars)++] = psprintf("%s%s%s", prefix, varname, suffix);
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}
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/*
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* This function supports completion with the name of a psql variable.
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* The variable names can be prefixed and suffixed with additional text
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* to support quoting usages.
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* to support quoting usages. If need_value is true, only the variables
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* that have the set values are picked up.
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*/
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static char **
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complete_from_variables(const char *text, const char *prefix, const char *suffix)
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complete_from_variables(const char *text, const char *prefix, const char *suffix,
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bool need_value)
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{
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char **matches;
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char **varnames;
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@ -4067,23 +4159,34 @@ complete_from_variables(const char *text, const char *prefix, const char *suffix
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int i;
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struct _variable *ptr;
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static const char *const known_varnames[] = {
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"AUTOCOMMIT", "COMP_KEYWORD_CASE", "DBNAME", "ECHO", "ECHO_HIDDEN",
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"ENCODING", "FETCH_COUNT", "HISTCONTROL", "HISTFILE", "HISTSIZE",
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"HOST", "IGNOREEOF", "LASTOID", "ON_ERROR_ROLLBACK", "ON_ERROR_STOP",
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"PORT", "PROMPT1", "PROMPT2", "PROMPT3", "QUIET", "SINGLELINE",
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"SINGLESTEP", "USER", "VERBOSITY", NULL
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};
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varnames = (char **) pg_malloc((maxvars + 1) * sizeof(char *));
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if (!need_value)
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{
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for (i = 0; known_varnames[i] && nvars < maxvars; i++)
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append_variable_names(&varnames, &nvars, &maxvars,
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known_varnames[i], prefix, suffix);
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}
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for (ptr = pset.vars->next; ptr; ptr = ptr->next)
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{
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if (nvars >= maxvars)
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if (need_value && !(ptr->value))
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continue;
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for (i = 0; known_varnames[i]; i++) /* remove duplicate entry */
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{
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maxvars *= 2;
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varnames = (char **) realloc(varnames,
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(maxvars + 1) * sizeof(char *));
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if (!varnames)
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{
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psql_error("out of memory\n");
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exit(EXIT_FAILURE);
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if (strcmp(ptr->name, known_varnames[i]) == 0)
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continue;
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}
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}
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varnames[nvars++] = psprintf("%s%s%s", prefix, ptr->name, suffix);
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append_variable_names(&varnames, &nvars, &maxvars, ptr->name,
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prefix, suffix);
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}
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varnames[nvars] = NULL;
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