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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001, 2002, 2004,
2005, 2006, 2007, 2009 Free Software Foundation, Inc.
GNU Mailutils 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 3, or (at your option)
any later version.
GNU Mailutils 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 GNU Mailutils; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301 USA */
/* MH context functions. */
#include <mh.h>
#include <sys/types.h>
#include <sys/stat.h>
mh_context_t *
mh_context_create (const char *name, int copy)
{
mh_context_t *ctx;
ctx = malloc (sizeof (*ctx));
if (!ctx)
mh_err_memory (1);
if (copy)
ctx->name = name;
else
{
ctx->name = strdup (name);
if (!ctx->name)
mh_err_memory (1);
}
ctx->header = NULL;
return ctx;
}
void
mh_context_destroy (mh_context_t **pctx)
{
mh_context_t *ctx = *pctx;
free ((char*) ctx->name);
if (ctx->header)
mu_header_destroy (&ctx->header, mu_header_get_owner (ctx->header));
free (ctx);
*pctx = NULL;
}
void
mh_context_merge (mh_context_t *dst, mh_context_t *src)
{
if (!dst->header)
{
dst->header = src->header;
src->header = NULL;
}
else
{
size_t i, count;
mu_header_get_field_count (src->header, &count);
for (i = 1; i <= count; i++)
{
const char *name = NULL;
const char *value = NULL;
mu_header_sget_field_name (src->header, i, &name);
mu_header_sget_field_value (src->header, i, &value);
mu_header_set_value (dst->header, name, value, 1);
}
}
}
int
mh_context_read (mh_context_t *ctx)
{
int status;
char *blurb, *p;
struct stat st;
FILE *fp;
char *buf = NULL;
size_t size = 0;
if (!ctx)
return MU_ERR_OUT_NULL;
if (stat (ctx->name, &st))
return errno;
blurb = malloc (st.st_size);
if (!blurb)
return ENOMEM;
fp = fopen (ctx->name, "r");
if (!fp)
{
free (blurb);
return errno;
}
p = blurb;
while (getline (&buf, &size, fp) > 0)
{
char *q;
for (q = buf; *q && mu_isspace (*q); q++)
;
if (!*q || *q == '#')
continue;
for (q = buf; *q;)
*p++ = *q++;
}
fclose (fp);
status = mu_header_create (&ctx->header, blurb, p - blurb, NULL);
free (blurb);
return status;
}
int
mh_context_write (mh_context_t *ctx)
{
mu_stream_t stream;
char buffer[512];
size_t off = 0, n;
FILE *fp;
if (!ctx)
return MU_ERR_OUT_NULL;
fp = fopen (ctx->name, "w");
if (!fp)
{
mu_error (_("cannot open context file %s: %s"),
ctx->name, strerror (errno));
return MU_ERR_FAILURE;
}
mu_header_get_stream (ctx->header, &stream);
while (mu_stream_read (stream, buffer, sizeof buffer - 1, off, &n) == 0
&& n != 0)
{
buffer[n] = '\0';
fprintf (fp, "%s", buffer);
off += n;
}
fclose (fp);
return 0;
}
const char *
mh_context_get_value (mh_context_t *ctx, const char *name, const char *defval)
{
const char *p;
if (!ctx || mu_header_sget_value (ctx->header, name, &p))
p = defval;
return p;
}
int
mh_context_set_value (mh_context_t *ctx, const char *name, const char *value)
{
if (!ctx)
return EINVAL;
if (!ctx->header)
{
int rc;
if ((rc = mu_header_create (&ctx->header, NULL, 0, NULL)) != 0)
{
mu_error (_("cannot create context %s: %s"),
ctx->name,
mu_strerror (rc));
return 1;
}
}
return mu_header_set_value (ctx->header, name, value, 1);
}
int
mh_context_iterate (mh_context_t *ctx, mh_context_iterator fp, void *data)
{
size_t i, nfields;
int rc = 0;
if (!ctx)
return EINVAL;
mu_header_get_field_count (ctx->header, &nfields);
for (i = 1; i <= nfields && rc == 0; i++)
{
const char *name, *value;
mu_header_sget_field_name (ctx->header, i, &name);
mu_header_sget_field_value (ctx->header, i, &value);
rc = fp (name, value, data);
}
return rc;
}
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