subset.c File Reference

Subset of config items. More...

#include "config.h"
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include "mutt/lib.h"
#include "subset.h"
#include "set.h"

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Functions
int	elem_list_sort (const void *a, const void *b, void *sdata)
	Compare two HashElem pointers to config - Implements sort_t -.
struct HashElem **	get_elem_list (struct ConfigSet *cs)
	Create a sorted list of all config items.
void	cs_subset_free (struct ConfigSubset **ptr)
	Free a Config Subset.
struct ConfigSubset *	cs_subset_new (const char *name, struct ConfigSubset *sub_parent, struct Notify *not_parent)
	Create a new Config Subset.
struct HashElem *	cs_subset_lookup (const struct ConfigSubset *sub, const char *name)
	Find an inherited config item.
struct HashElem *	cs_subset_create_inheritance (const struct ConfigSubset *sub, const char *name)
	Create a Subset config item (inherited)
void	cs_subset_notify_observers (const struct ConfigSubset *sub, struct HashElem *he, enum NotifyConfig ev)
	Notify all observers of an event.
intptr_t	cs_subset_he_native_get (const struct ConfigSubset *sub, struct HashElem *he, struct Buffer *err)
	Natively get the value of a HashElem config item.
int	cs_subset_he_native_set (const struct ConfigSubset *sub, struct HashElem *he, intptr_t value, struct Buffer *err)
	Natively set the value of a HashElem config item.
int	cs_subset_str_native_set (const struct ConfigSubset *sub, const char *name, intptr_t value, struct Buffer *err)
	Natively set the value of a string config item.
int	cs_subset_he_reset (const struct ConfigSubset *sub, struct HashElem *he, struct Buffer *err)
	Reset a config item to its initial value.
int	cs_subset_he_string_get (const struct ConfigSubset *sub, struct HashElem *he, struct Buffer *result)
	Get a config item as a string.
int	cs_subset_str_string_get (const struct ConfigSubset *sub, const char *name, struct Buffer *result)
	Get a config item as a string.
int	cs_subset_he_string_set (const struct ConfigSubset *sub, struct HashElem *he, const char *value, struct Buffer *err)
	Set a config item by string.
int	cs_subset_str_string_set (const struct ConfigSubset *sub, const char *name, const char *value, struct Buffer *err)
	Set a config item by string.
int	cs_subset_he_string_plus_equals (const struct ConfigSubset *sub, struct HashElem *he, const char *value, struct Buffer *err)
	Add to a config item by string.
int	cs_subset_he_string_minus_equals (const struct ConfigSubset *sub, struct HashElem *he, const char *value, struct Buffer *err)
	Remove from a config item by string.
int	cs_subset_he_delete (const struct ConfigSubset *sub, struct HashElem *he, struct Buffer *err)
	Delete config item from a config.

Variables
static const struct Mapping	ConfigEventNames []
	Names for logging.

Detailed Description

Subset of config items.

Authors

• Richard Russon
• Pietro Cerutti
• Rayford Shireman

Copyright

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file subset.c.

Function Documentation

get_elem_list()

struct HashElem ** get_elem_list

(

struct ConfigSet *

cs

)

Create a sorted list of all config items.

Parameters

cs	ConfigSet to read

Return values

ptr	Null-terminated array of HashElem

Definition at line 79 of file subset.c.

{
  if (!cs)
    return NULL;
 
  struct HashElem **he_list = mutt_mem_calloc(1024, sizeof(struct HashElem *));
  size_t index = 0;
 
  struct HashWalkState walk = { 0 };
  struct HashElem *he = NULL;
 
  while ((he = mutt_hash_walk(cs->hash, &walk)))
  {
    he_list[index++] = he;
    if (index == 1022)
      break; /* LCOV_EXCL_LINE */
  }
 
  mutt_qsort_r(he_list, index, sizeof(struct HashElem *), elem_list_sort, NULL);
 
  return he_list;
}

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cs_subset_free()

void cs_subset_free

(

struct ConfigSubset **

ptr

)

Free a Config Subset.

Parameters

ptr	Subset to free

Note

Config items matching this Subset will be freed

Definition at line 108 of file subset.c.

{
  if (!ptr || !*ptr)
    return;
 
  struct ConfigSubset *sub = *ptr;
 
  struct EventConfig ev_c = { sub, NULL, NULL };
  mutt_debug(LL_NOTIFY, "NT_CONFIG_DELETED: ALL\n");
  notify_send(sub->notify, NT_CONFIG, NT_CONFIG_DELETED, &ev_c);
 
  if (sub->cs && sub->name)
  {
    char scope[256] = { 0 };
    snprintf(scope, sizeof(scope), "%s:", sub->name);
 
    // We don't know if any config items have been set,
    // so search for anything with a matching scope.
    struct HashElem **he_list = get_elem_list(sub->cs);
    for (size_t i = 0; he_list[i]; i++)
    {
      const char *item = he_list[i]->key.strkey;
      if (mutt_str_startswith(item, scope) != 0)
      {
        cs_uninherit_variable(sub->cs, item);
      }
    }
    FREE(&he_list);
  }
 
  notify_free(&sub->notify);
  FREE(&sub->name);
  FREE(ptr);
}

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cs_subset_new()

struct ConfigSubset * cs_subset_new	(	const char *	name,
		struct ConfigSubset *	sub_parent,
		struct Notify *	not_parent
	)

Create a new Config Subset.

Parameters

name	Name for this Subset
sub_parent	Parent Subset
not_parent	Parent Notification

Return values

ptr	New Subset

Note

The name will be combined with the parents' names

Definition at line 152 of file subset.c.

{
  struct ConfigSubset *sub = mutt_mem_calloc(1, sizeof(*sub));
 
  if (sub_parent)
  {
    sub->parent = sub_parent;
    sub->cs = sub_parent->cs;
  }
 
  if (name)
  {
    char scope[256] = { 0 };
 
    if (sub_parent && sub_parent->name)
      snprintf(scope, sizeof(scope), "%s:%s", sub_parent->name, name);
    else
      mutt_str_copy(scope, name, sizeof(scope));
 
    sub->name = mutt_str_dup(scope);
  }
 
  sub->notify = notify_new();
  notify_set_parent(sub->notify, not_parent);
 
  return sub;
}

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cs_subset_lookup()

struct HashElem * cs_subset_lookup	(	const struct ConfigSubset *	sub,
		const char *	name
	)

Find an inherited config item.

Parameters

sub	Subset to search
name	Name of Config item to find

Return values

ptr	HashElem of the config item

Definition at line 187 of file subset.c.

{
  if (!sub || !name)
    return NULL;
 
  char scope[256] = { 0 };
  if (sub->name)
    snprintf(scope, sizeof(scope), "%s:%s", sub->name, name);
  else
    mutt_str_copy(scope, name, sizeof(scope));
 
  return cs_get_elem(sub->cs, scope);
}

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cs_subset_create_inheritance()

struct HashElem * cs_subset_create_inheritance	(	const struct ConfigSubset *	sub,
		const char *	name
	)

Create a Subset config item (inherited)

Parameters

sub	Config Subset
name	Name of config item

Return values

ptr	HashElem of the config item
NULL	Error

Definition at line 208 of file subset.c.

{
  if (!sub)
    return NULL;
 
  struct HashElem *he = cs_subset_lookup(sub, name);
  if (he)
    return he;
 
  if (sub->parent)
  {
    // Create parent before creating name
    he = cs_subset_create_inheritance(sub->parent, name);
  }
 
  if (!he)
    return NULL;
 
  char scope[256] = { 0 };
  snprintf(scope, sizeof(scope), "%s:%s", sub->name, name);
  return cs_inherit_variable(sub->cs, he, scope);
}

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cs_subset_notify_observers()

void cs_subset_notify_observers	(	const struct ConfigSubset *	sub,
		struct HashElem *	he,
		enum NotifyConfig	ev
	)

Notify all observers of an event.

Parameters

sub	Config Subset
he	HashElem representing config item
ev	Type of event

Definition at line 237 of file subset.c.

{
  if (!sub || !he)
    return;
 
  struct HashElem *he_base = cs_get_base(he);
  struct EventConfig ev_c = { sub, he_base->key.strkey, he };
  mutt_debug(LL_NOTIFY, "%s: %s\n",
             NONULL(mutt_map_get_name(ev, ConfigEventNames)), he_base->key.strkey);
  notify_send(sub->notify, NT_CONFIG, ev, &ev_c);
}

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cs_subset_he_native_get()

intptr_t cs_subset_he_native_get	(	const struct ConfigSubset *	sub,
		struct HashElem *	he,
		struct Buffer *	err
	)

Natively get the value of a HashElem config item.

Parameters

sub	Config Subset
he	HashElem representing config item
err	Buffer for error messages

Return values

intptr_t	Native pointer/value
INT_MIN	Error

Definition at line 258 of file subset.c.

{
  if (!sub)
    return INT_MIN;
 
  return cs_he_native_get(sub->cs, he, err);
}

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cs_subset_he_native_set()

int cs_subset_he_native_set	(	const struct ConfigSubset *	sub,
		struct HashElem *	he,
		intptr_t	value,
		struct Buffer *	err
	)

Natively set the value of a HashElem config item.

Parameters

sub	Config Subset
he	HashElem representing config item
value	Native pointer/value to set
err	Buffer for error messages

Return values

num	Result, e.g. CSR_SUCCESS

Definition at line 275 of file subset.c.

{
  if (!sub)
    return CSR_ERR_CODE;
 
  int rc = cs_he_native_set(sub->cs, he, value, err);
 
  if ((CSR_RESULT(rc) == CSR_SUCCESS) && !(rc & CSR_SUC_NO_CHANGE))
    cs_subset_notify_observers(sub, he, NT_CONFIG_SET);
 
  return rc;
}

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cs_subset_str_native_set()

int cs_subset_str_native_set	(	const struct ConfigSubset *	sub,
		const char *	name,
		intptr_t	value,
		struct Buffer *	err
	)

Natively set the value of a string config item.

Parameters

sub	Config Subset
name	Name of config item
value	Native pointer/value to set
err	Buffer for error messages

Return values

num	Result, e.g. CSR_SUCCESS

Definition at line 297 of file subset.c.

{
  struct HashElem *he = cs_subset_create_inheritance(sub, name);
 
  return cs_subset_he_native_set(sub, he, value, err);
}

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cs_subset_he_reset()

int cs_subset_he_reset	(	const struct ConfigSubset *	sub,
		struct HashElem *	he,
		struct Buffer *	err
	)

Reset a config item to its initial value.

Parameters

sub	Config Subset
he	HashElem representing config item
err	Buffer for error messages

Return values

num	Result, e.g. CSR_SUCCESS

Definition at line 312 of file subset.c.

{
  if (!sub)
    return CSR_ERR_CODE;
 
  int rc = cs_he_reset(sub->cs, he, err);
 
  if ((CSR_RESULT(rc) == CSR_SUCCESS) && !(rc & CSR_SUC_NO_CHANGE))
    cs_subset_notify_observers(sub, he, NT_CONFIG_RESET);
 
  return rc;
}

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cs_subset_he_string_get()

int cs_subset_he_string_get	(	const struct ConfigSubset *	sub,
		struct HashElem *	he,
		struct Buffer *	result
	)

Get a config item as a string.

Parameters

sub	Config Subset
he	HashElem representing config item
result	Buffer for results or error messages

Return values

num	Result, e.g. CSR_SUCCESS

Definition at line 332 of file subset.c.

{
  if (!sub)
    return CSR_ERR_CODE;
 
  return cs_he_string_get(sub->cs, he, result);
}

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cs_subset_str_string_get()

int cs_subset_str_string_get	(	const struct ConfigSubset *	sub,
		const char *	name,
		struct Buffer *	result
	)

Get a config item as a string.

Parameters

sub	Config Subset
name	Name of config item
result	Buffer for results or error messages

Return values

num	Result, e.g. CSR_SUCCESS

Definition at line 348 of file subset.c.

{
  struct HashElem *he = cs_subset_create_inheritance(sub, name);
 
  return cs_subset_he_string_get(sub, he, result);
}

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cs_subset_he_string_set()

int cs_subset_he_string_set	(	const struct ConfigSubset *	sub,
		struct HashElem *	he,
		const char *	value,
		struct Buffer *	err
	)

Set a config item by string.

Parameters

sub	Config Subset
he	HashElem representing config item
value	Value to set
err	Buffer for error messages

Return values

num	Result, e.g. CSR_SUCCESS

Definition at line 364 of file subset.c.

{
  if (!sub)
    return CSR_ERR_CODE;
 
  int rc = cs_he_string_set(sub->cs, he, value, err);
 
  if ((CSR_RESULT(rc) == CSR_SUCCESS) && !(rc & CSR_SUC_NO_CHANGE))
    cs_subset_notify_observers(sub, he, NT_CONFIG_SET);
 
  return rc;
}

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cs_subset_str_string_set()

int cs_subset_str_string_set	(	const struct ConfigSubset *	sub,
		const char *	name,
		const char *	value,
		struct Buffer *	err
	)

Set a config item by string.

Parameters

sub	Config Subset
name	Name of config item
value	Value to set
err	Buffer for error messages

Return values

num	Result, e.g. CSR_SUCCESS

Definition at line 386 of file subset.c.

{
  struct HashElem *he = cs_subset_create_inheritance(sub, name);
 
  return cs_subset_he_string_set(sub, he, value, err);
}

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cs_subset_he_string_plus_equals()

int cs_subset_he_string_plus_equals	(	const struct ConfigSubset *	sub,
		struct HashElem *	he,
		const char *	value,
		struct Buffer *	err
	)

Add to a config item by string.

Parameters

sub	Config Subset
he	HashElem representing config item
value	Value to set
err	Buffer for error messages

Return values

num	Result, e.g. CSR_SUCCESS

Definition at line 402 of file subset.c.

{
  if (!sub)
    return CSR_ERR_CODE;
 
  int rc = cs_he_string_plus_equals(sub->cs, he, value, err);
 
  if ((CSR_RESULT(rc) == CSR_SUCCESS) && !(rc & CSR_SUC_NO_CHANGE))
    cs_subset_notify_observers(sub, he, NT_CONFIG_SET);
 
  return rc;
}

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cs_subset_he_string_minus_equals()

int cs_subset_he_string_minus_equals	(	const struct ConfigSubset *	sub,
		struct HashElem *	he,
		const char *	value,
		struct Buffer *	err
	)

Remove from a config item by string.

Parameters

sub	Config Subset
he	HashElem representing config item
value	Value to set
err	Buffer for error messages

Return values

num	Result, e.g. CSR_SUCCESS

Definition at line 424 of file subset.c.

{
  if (!sub)
    return CSR_ERR_CODE;
 
  int rc = cs_he_string_minus_equals(sub->cs, he, value, err);
 
  if ((CSR_RESULT(rc) == CSR_SUCCESS) && !(rc & CSR_SUC_NO_CHANGE))
    cs_subset_notify_observers(sub, he, NT_CONFIG_SET);
 
  return rc;
}

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cs_subset_he_delete()

int cs_subset_he_delete	(	const struct ConfigSubset *	sub,
		struct HashElem *	he,
		struct Buffer *	err
	)

Delete config item from a config.

Parameters

sub	Config Subset
he	HashElem representing config item
err	Buffer for error messages

Return values

num	Result, e.g. CSR_SUCCESS

Definition at line 445 of file subset.c.

{
  if (!sub)
    return CSR_ERR_CODE;
 
  const char *name = mutt_str_dup(he->key.strkey);
  int rc = cs_he_delete(sub->cs, he, err);
 
  if (CSR_RESULT(rc) == CSR_SUCCESS)
  {
    struct EventConfig ev_c = { sub, name, NULL };
    mutt_debug(LL_NOTIFY, "NT_CONFIG_DELETED: %s\n", name);
    notify_send(sub->notify, NT_CONFIG, NT_CONFIG_DELETED, &ev_c);
  }
 
  FREE(&name);
  return rc;
}

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Variable Documentation

ConfigEventNames

const struct Mapping ConfigEventNames[]

static

Initial value:

= {
  
  { "NT_CONFIG_SET",     NT_CONFIG_SET     },
  { "NT_CONFIG_RESET",   NT_CONFIG_RESET   },
  { "NT_CONFIG_DELETED", NT_CONFIG_DELETED },
  { NULL, 0 },
  
}

Names for logging.

Definition at line 51 of file subset.c.