node_expando.c File Reference

Expando Node for an Expando. More...

#include "config.h"
#include <limits.h>
#include <stdio.h>
#include "mutt/lib.h"
#include "node_expando.h"
#include "color/lib.h"
#include "definition.h"
#include "format.h"
#include "helpers.h"
#include "mutt_thread.h"
#include "node.h"
#include "parse.h"
#include "render.h"

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Functions
struct NodeExpandoPrivate *	node_expando_private_new (void)
	Create new Expando private data.
void	node_expando_private_free (void **ptr)
	Free Expando private data - Implements ExpandoNode::ndata_free()
struct ExpandoNode *	node_expando_new (struct ExpandoFormat *fmt, int did, int uid)
	Create a new Expando ExpandoNode.
void	node_expando_set_color (const struct ExpandoNode *node, int cid)
	Set the colour for an Expando.
void	node_expando_set_has_tree (const struct ExpandoNode *node, bool has_tree)
	Set the has_tree flag for an Expando.
struct ExpandoFormat *	parse_format (const char *str, const char **parsed_until, struct ExpandoParseError *err)
	Parse a format string.
struct ExpandoNode *	parse_short_name (const char *str, const struct ExpandoDefinition *defs, ExpandoParserFlags flags, struct ExpandoFormat *fmt, const char **parsed_until, struct ExpandoParseError *err)
	Create an expando by its short name.
struct ExpandoNode *	node_expando_parse (const char *str, const struct ExpandoDefinition *defs, ExpandoParserFlags flags, const char **parsed_until, struct ExpandoParseError *err)
	Parse an Expando format string.
const char *	skip_until_ch (const char *str, char terminator)
	Search a string for a terminator character.
struct ExpandoNode *	node_expando_parse_enclosure (const char *str, int did, int uid, char terminator, struct ExpandoFormat *fmt, const char **parsed_until, struct ExpandoParseError *err)
	Parse an enclosed Expando.
void	add_color (struct Buffer *buf, enum ColorId cid)
	Add a colour code to a buffer.
int	node_expando_render (const struct ExpandoNode *node, const struct ExpandoRenderCallback *erc, struct Buffer *buf, int max_cols, void *data, MuttFormatFlags flags)
	Render an Expando Node - Implements ExpandoNode::render() -.

Detailed Description

Expando Node for an Expando.

Authors

• Tóth János
• Richard Russon

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 node_expando.c.

Function Documentation

node_expando_private_new()

struct NodeExpandoPrivate * node_expando_private_new

(

void

)

Create new Expando private data.

Return values

ptr	New Expando private data

Definition at line 48 of file node_expando.c.

{
  struct NodeExpandoPrivate *priv = MUTT_MEM_CALLOC(1, struct NodeExpandoPrivate);
 
  // NOTE(g0mb4): Expando definition should contain this
  priv->color = -1;
 
  return priv;
}

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node_expando_private_free()

void node_expando_private_free

(

void **

ptr

)

Free Expando private data - Implements ExpandoNode::ndata_free()

Parameters

ptr	Data to free

Definition at line 62 of file node_expando.c.

{
  if (!ptr || !*ptr)
    return;
 
  FREE(ptr);
}

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node_expando_new()

struct ExpandoNode * node_expando_new	(	struct ExpandoFormat *	fmt,
		int	did,
		int	uid )

Create a new Expando ExpandoNode.

Parameters

fmt	Formatting data
did	Domain ID
uid	Unique ID

Return values

ptr	New Expando ExpandoNode

Definition at line 77 of file node_expando.c.

{
  struct ExpandoNode *node = node_new();
 
  node->type = ENT_EXPANDO;
  node->did = did;
  node->uid = uid;
  node->render = node_expando_render;
 
  node->format = fmt;
 
  node->ndata = node_expando_private_new();
  node->ndata_free = node_expando_private_free;
 
  return node;
}

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node_expando_set_color()

void node_expando_set_color	(	const struct ExpandoNode *	node,
		int	cid )

Set the colour for an Expando.

Parameters

node	Node to alter
cid	Colour

Definition at line 99 of file node_expando.c.

{
  if (!node || (node->type != ENT_EXPANDO) || !node->ndata)
    return;
 
  struct NodeExpandoPrivate *priv = node->ndata;
 
  priv->color = cid;
}

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node_expando_set_has_tree()

void node_expando_set_has_tree	(	const struct ExpandoNode *	node,
		bool	has_tree )

Set the has_tree flag for an Expando.

Parameters

node	Node to alter
has_tree	Flag to set

Definition at line 114 of file node_expando.c.

{
  if (!node || (node->type != ENT_EXPANDO) || !node->ndata)
    return;
 
  struct NodeExpandoPrivate *priv = node->ndata;
 
  priv->has_tree = has_tree;
}

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parse_format()

struct ExpandoFormat * parse_format	(	const char *	str,
		const char **	parsed_until,
		struct ExpandoParseError *	err )

Parse a format string.

Parameters

[in]	str	String to parse
[out]	parsed_until	First character after the parsed string
[out]	err	Buffer for errors

Return values

ptr	New ExpandoFormat object

Parse a printf()-style format, e.g. '-15.20x'

Note

A trailing _ (underscore) means lowercase the string

Definition at line 135 of file node_expando.c.

{
  if (!str || !parsed_until || !err)
    return NULL;
 
  const char *start = str;
 
  struct ExpandoFormat *fmt = MUTT_MEM_CALLOC(1, struct ExpandoFormat);
 
  fmt->leader = ' ';
  fmt->justification = JUSTIFY_RIGHT;
  fmt->min_cols = 0;
  fmt->max_cols = -1;
 
  if (*str == '-')
  {
    fmt->justification = JUSTIFY_LEFT;
    str++;
  }
  else if (*str == '=')
  {
    fmt->justification = JUSTIFY_CENTER;
    str++;
  }
 
  if (*str == '0')
  {
    // Ignore '0' with left-justification
    if (fmt->justification != JUSTIFY_LEFT)
      fmt->leader = '0';
    str++;
  }
 
  // Parse the width (min_cols)
  if (mutt_isdigit(*str))
  {
    unsigned short number = 0;
    const char *end_ptr = mutt_str_atous(str, &number);
 
    if (!end_ptr || (number == USHRT_MAX))
    {
      err->position = str;
      snprintf(err->message, sizeof(err->message), _("Invalid number: %s"), str);
      FREE(&fmt);
      return NULL;
    }
 
    fmt->min_cols = number;
    str = end_ptr;
  }
 
  // Parse the precision (max_cols)
  if (*str == '.')
  {
    str++;
 
    unsigned short number = 1;
 
    if (mutt_isdigit(*str))
    {
      const char *end_ptr = mutt_str_atous(str, &number);
 
      if (!end_ptr || (number == USHRT_MAX))
      {
        err->position = str;
        snprintf(err->message, sizeof(err->message), _("Invalid number: %s"), str);
        FREE(&fmt);
        return NULL;
      }
 
      str = end_ptr;
    }
    else
    {
      number = 0;
    }
 
    fmt->leader = (number == 0) ? ' ' : '0';
    fmt->max_cols = number;
  }
 
  // A modifier of '_' before the letter means force lower case
  if (*str == '_')
  {
    fmt->lower = true;
    str++;
  }
 
  if (str == start) // Failed to parse anything
    FREE(&fmt);
 
  if (fmt && (fmt->min_cols == 0) && (fmt->max_cols == -1) && !fmt->lower)
    FREE(&fmt);
 
  *parsed_until = str;
  return fmt;
}

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parse_short_name()

struct ExpandoNode * parse_short_name	(	const char *	str,
		const struct ExpandoDefinition *	defs,
		ExpandoParserFlags	flags,
		struct ExpandoFormat *	fmt,
		const char **	parsed_until,
		struct ExpandoParseError *	err )

Create an expando by its short name.

Parameters

[in]	str	String to parse
[in]	defs	Expando definitions
[in]	flags	Flag for conditional expandos
[in]	fmt	Formatting info
[out]	parsed_until	First character after parsed string
[out]	err	Buffer for errors

Return values

ptr	New ExpandoNode

Definition at line 244 of file node_expando.c.

{
  if (!str || !defs)
    return NULL;
 
  const struct ExpandoDefinition *def = defs;
  for (; def && def->short_name; def++)
  {
    size_t len = mutt_str_len(def->short_name);
 
    if (mutt_strn_equal(def->short_name, str, len))
    {
      if (def->parse && !(flags & EP_NO_CUSTOM_PARSE))
      {
        return def->parse(str, fmt, def->did, def->uid, flags, parsed_until, err);
      }
      else
      {
        *parsed_until = str + len;
        return node_expando_new(fmt, def->did, def->uid);
      }
    }
  }
 
  return NULL;
}

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node_expando_parse()

struct ExpandoNode * node_expando_parse	(	const char *	str,
		const struct ExpandoDefinition *	defs,
		ExpandoParserFlags	flags,
		const char **	parsed_until,
		struct ExpandoParseError *	err )

Parse an Expando format string.

Parameters

[in]	str	String to parse
[in]	defs	Expando definitions
[in]	flags	Flag for conditional expandos
[out]	parsed_until	First character after parsed string
[out]	err	Buffer for errors

Return values

ptr	New ExpandoNode

Definition at line 283 of file node_expando.c.

{
  ASSERT(str[0] == '%');
  str++;
 
  struct ExpandoFormat *fmt = parse_format(str, parsed_until, err);
  if (err->position)
  {
    FREE(&fmt);
    return NULL;
  }
 
  str = *parsed_until;
 
  struct ExpandoNode *node = parse_short_name(str, defs, flags, fmt, parsed_until, err);
  if (node)
    return node;
 
  err->position = *parsed_until;
  // L10N: e.g. "Unknown expando: %Q"
  snprintf(err->message, sizeof(err->message), _("Unknown expando: %%%.1s"), *parsed_until);
  FREE(&fmt);
  return NULL;
}

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skip_until_ch()

const char * skip_until_ch	(	const char *	str,
		char	terminator )

Search a string for a terminator character.

Parameters

str	Start of string
terminator	Character to find

Return values

ptr	Position of terminator character, or end-of-string

Definition at line 316 of file node_expando.c.

{
  while (str[0] != '\0')
  {
    if (*str == terminator)
      break;
 
    if (str[0] == '\\') // Literal character
    {
      if (str[1] == '\0')
        return str + 1;
 
      str++;
    }
 
    str++;
  }
 
  return str;
}

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node_expando_parse_enclosure()

struct ExpandoNode * node_expando_parse_enclosure	(	const char *	str,
		int	did,
		int	uid,
		char	terminator,
		struct ExpandoFormat *	fmt,
		const char **	parsed_until,
		struct ExpandoParseError *	err )

Parse an enclosed Expando.

Parameters

[in]	str	String to parse
[in]	did	Domain ID
[in]	uid	Unique ID
[in]	terminator	Terminating character
[in]	fmt	Formatting info
[out]	parsed_until	First character after the parsed string
[out]	err	Buffer for errors

Return values

ptr	New ExpandoNode

Definition at line 348 of file node_expando.c.

{
  str++; // skip opening char
 
  const char *expando_end = skip_until_ch(str, terminator);
 
  if (*expando_end != terminator)
  {
    err->position = expando_end;
    snprintf(err->message, sizeof(err->message),
             // L10N: Expando is missing a terminator character
             //       e.g. "%[..." is missing the final ']'
             _("Expando is missing terminator: '%c'"), terminator);
    return NULL;
  }
 
  *parsed_until = expando_end + 1;
 
  struct ExpandoNode *node = node_expando_new(fmt, did, uid);
 
  struct Buffer *buf = buf_pool_get();
  for (; str < expando_end; str++)
  {
    if (str[0] == '\\')
      continue;
    buf_addch(buf, str[0]);
  }
 
  node->text = buf_strdup(buf);
  buf_pool_release(&buf);
 
  return node;
}

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add_color()

void add_color	(	struct Buffer *	buf,
		enum ColorId	cid )

Add a colour code to a buffer.

Parameters

buf	Buffer for colour code
cid	Colour

Definition at line 392 of file node_expando.c.

{
  ASSERT(cid < MT_COLOR_MAX);
 
  buf_addch(buf, MUTT_SPECIAL_INDEX);
  buf_addch(buf, cid);
}

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