node_text.c

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#include "config.h"
#include <stdbool.h>
#include <stddef.h>
#include "mutt/lib.h"
#include "node_text.h"
#include "format.h"
#include "node.h"
#include "render.h"
 
static int node_text_render(const struct ExpandoNode *node,
                            const struct ExpandoRenderCallback *erc, struct Buffer *buf,
                            int max_cols, void *data, MuttFormatFlags flags)
{
  ASSERT(node->type == ENT_TEXT);
 
  return format_string(buf, 0, max_cols, JUSTIFY_LEFT, ' ', node->text,
                       mutt_str_len(node->text), false);
}
 
struct ExpandoNode *node_text_new(const char *text)
{
  struct ExpandoNode *node = node_new();
 
  node->type = ENT_TEXT;
  node->text = mutt_str_dup(text);
  node->render = node_text_render;
 
  return node;
}
 
struct ExpandoNode *node_text_parse(const char *str, NodeTextTermFlags term_chars,
                                    const char **parsed_until)
{
  if (!str || (str[0] == '\0') || !parsed_until)
    return NULL;
 
  struct Buffer *text = buf_pool_get();
 
  while (str[0] != '\0')
  {
    if (str[0] == '\\') // Literal character
    {
      if (str[1] == '\0')
      {
        buf_addch(text, '\\');
        str++;
        break;
      }
 
      buf_addch(text, str[1]);
      str += 2;
      continue;
    }
 
    if ((str[0] == '%') && (str[1] == '%')) // Literal %
    {
      buf_addch(text, '%');
      str += 2;
      continue;
    }
 
    if (str[0] == '%') // '%' is always special
      break;
 
    if ((str[0] == '&') && (term_chars & NTE_AMPERSAND))
      break;
 
    if ((str[0] == '>') && (term_chars & NTE_GREATER))
      break;
 
    if ((str[0] == '?') && (term_chars & NTE_QUESTION))
      break;
 
    buf_addch(text, str[0]); // Plain text
    str++;
  }
 
  *parsed_until = str; // First unused character
 
  struct ExpandoNode *node = NULL;
  if (!buf_is_empty(text))
    node = node_text_new(buf_string(text));
 
  buf_pool_release(&text);
 
  return node;
}