server/src/util/nrmessage.c

/* vi: set ts=2:
 +-------------------+  Christian Schlittchen <corwin@amber.kn-bremen.de>
 |                   |  Enno Rehling <enno@eressea.de>
 | Eressea PBEM host |  Katja Zedel <katze@felidae.kn-bremen.de>
 | (c) 1998 - 2003   |  Henning Peters <faroul@beyond.kn-bremen.de>
 |                   |  Ingo Wilken <Ingo.Wilken@informatik.uni-oldenburg.de>
 +-------------------+  Stefan Reich <reich@halbling.de>

 This program may not be used, modified or distributed
 without prior permission by the authors of Eressea.

*/

#include <platform.h>
#include "nrmessage.h"
#include "nrmessage_struct.h"

/* util includes */
#include "bsdstring.h"
#include "log.h"
#include "message.h"
#include "language.h"
#include "translation.h"
#include "goodies.h"

/* libc includes */
#include <assert.h>
#include <string.h>
#include <stdlib.h>

#define NRT_MAXHASH 1021
static nrmessage_type *nrtypes[NRT_MAXHASH];

const char *nrt_string(const struct nrmessage_type *type)
{
  return type->string;
}

nrmessage_type *nrt_find(const struct locale * lang,
  const struct message_type * mtype)
{
  nrmessage_type *found = NULL;
  unsigned int hash = hashstring(mtype->name) % NRT_MAXHASH;
  nrmessage_type *type = nrtypes[hash];
  while (type) {
    if (type->mtype == mtype) {
      if (found == NULL)
        found = type;
      else if (type->lang == NULL)
        found = type;
      if (lang == type->lang) {
        found = type;
        break;
      }
    }
    type = type->next;
  }
  if (!found) {
    log_warning("could not find nr-type %s for locale %s\n", mtype->name, locale_name(lang));
  }
  if (lang && found && found->lang != lang) {
    log_warning("could not find nr-type %s for locale %s, using %s\n", mtype->name, locale_name(lang), locale_name(found->lang));
  }
  return found;
}

nrsection *sections;

const nrsection *section_find(const char *name)
{
  nrsection **mcp = &sections;
  if (name == NULL)
    return NULL;
  for (; *mcp; mcp = &(*mcp)->next) {
    nrsection *mc = *mcp;
    if (!strcmp(mc->name, name))
      break;
  }
  return *mcp;
}

const nrsection *section_add(const char *name)
{
  nrsection **mcp = &sections;
  if (name == NULL)
    return NULL;
  for (; *mcp; mcp = &(*mcp)->next) {
    nrsection *mc = *mcp;
    if (!strcmp(mc->name, name))
      break;
  }
  if (!*mcp) {
    nrsection *mc = calloc(sizeof(nrsection), 1);
    mc->name = _strdup(name);
    *mcp = mc;
  }
  return *mcp;
}

void
nrt_register(const struct message_type *mtype, const struct locale *lang,
  const char *string, int level, const char *section)
{
  unsigned int hash = hashstring(mtype->name) % NRT_MAXHASH;
  nrmessage_type *nrt = nrtypes[hash];
  while (nrt && (nrt->lang != lang || nrt->mtype != mtype)) {
    nrt = nrt->next;
  }
  if (nrt) {
    log_error("duplicate message-type %s\n", mtype->name);
    assert(!nrt || !"trying to register same nr-type twice");
  } else {
    int i;
    char zNames[256];
    char *c = zNames;
    nrt = malloc(sizeof(nrmessage_type));
    nrt->lang = lang;
    nrt->mtype = mtype;
    nrt->next = nrtypes[hash];
    nrt->level = level;
    if (section) {
      const nrsection *s = section_find(section);
      if (s == NULL) {
        s = section_add(section);
      }
      nrt->section = s->name;
    } else
      nrt->section = NULL;
    nrtypes[hash] = nrt;
    assert(string && *string);
    nrt->string = _strdup(string);
    *c = '\0';
    for (i = 0; i != mtype->nparameters; ++i) {
      if (i != 0)
        *c++ = ' ';
      c += strlen(strcpy(c, mtype->pnames[i]));
    }
    nrt->vars = _strdup(zNames);
  }
}

size_t
nr_render(const struct message *msg, const struct locale *lang, char *buffer,
  size_t size, const void *userdata)
{
  struct nrmessage_type *nrt = nrt_find(lang, msg->type);

  if (nrt) {
    const char *m =
      translate(nrt->string, userdata, nrt->vars, msg->parameters);
    if (m) {
      return strlcpy((char *)buffer, m, size);
    } else {
      log_error("Couldn't render message %s\n", nrt->mtype->name);
    }
  }
  if (size > 0 && buffer)
    buffer[0] = 0;
  return 0;
}

int nr_level(const struct message *msg)
{
  nrmessage_type *nrt = nrt_find(NULL, msg->type);
  return nrt ? nrt->level : 0;
}

const char *nr_section(const struct message *msg)
{
  nrmessage_type *nrt = nrt_find(default_locale, msg->type);
  return nrt ? nrt->section : NULL;
}

const char *nrt_section(const nrmessage_type * nrt)
{
  return nrt ? nrt->section : NULL;
}