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-rw-r--r--src/output/slbt_output_config.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/src/output/slbt_output_config.c b/src/output/slbt_output_config.c
new file mode 100644
index 0000000..d779c68
--- /dev/null
+++ b/src/output/slbt_output_config.c
@@ -0,0 +1,100 @@
+/*******************************************************************/
+/* slibtool: a skinny libtool implementation, written in C */
+/* Copyright (C) 2016--2024 SysDeer Technologies, LLC */
+/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
+/*******************************************************************/
+
+#include <stdio.h>
+#include <string.h>
+#include <stdbool.h>
+
+#include <slibtool/slibtool.h>
+#include "slibtool_driver_impl.h"
+#include "slibtool_dprintf_impl.h"
+#include "slibtool_errinfo_impl.h"
+
+static const char lconf_begin[] = "# ### BEGIN LIBTOOL CONFIG\n";
+static const char lconf_end [] = "# ### END LIBTOOL CONFIG\n";
+
+static int slbt_output_config_lconf(
+ const struct slbt_driver_ctx * dctx,
+ const struct slbt_map_info * lconf)
+{
+ const char * ch;
+ const char * cfg_begin;
+ const char * cfg_end;
+ const char * map_cap;
+ size_t cmp_len;
+ size_t end_len;
+ size_t min_len;
+ size_t nbytes;
+ ssize_t written;
+ int fdout;
+
+ cmp_len = strlen(lconf_begin);
+ end_len = strlen(lconf_end);
+ min_len = cmp_len + end_len;
+
+ if (lconf->size < min_len)
+ return SLBT_CUSTOM_ERROR(
+ dctx,
+ SLBT_ERR_FLOW_ERROR);
+
+ map_cap = lconf->addr;
+ map_cap += lconf->size;
+ map_cap -= strlen(lconf_end);
+ map_cap -= strlen(lconf_begin);
+
+ cfg_begin = cfg_end = 0;
+
+ for (ch=lconf->addr; !cfg_begin && (ch < map_cap); ch++)
+ if (!strncmp(ch,lconf_begin,cmp_len))
+ cfg_begin = ch;
+
+ if (!cfg_begin)
+ return SLBT_CUSTOM_ERROR(
+ dctx,
+ SLBT_ERR_FLOW_ERROR);
+
+ for (++ch; !cfg_end && (ch < map_cap); ch++)
+ if (!strncmp(ch,lconf_end,end_len))
+ cfg_end = ch;
+
+ if (!cfg_end)
+ return SLBT_CUSTOM_ERROR(
+ dctx,
+ SLBT_ERR_FLOW_ERROR);
+
+ fdout = slbt_driver_fdout(dctx);
+ nbytes = cfg_end - cfg_begin - cmp_len;
+
+ for (ch=&cfg_begin[cmp_len]; nbytes; ) {
+ written = write(fdout,ch,nbytes);
+
+ while ((written < 0) && (errno == EINTR))
+ written = write(fdout,ch,nbytes);
+
+ if (written < 0)
+ return SLBT_SYSTEM_ERROR(dctx,0);
+
+ nbytes -= written;
+ ch += written;
+ }
+
+ return 0;
+}
+
+int slbt_output_config(const struct slbt_driver_ctx * dctx)
+{
+ struct slbt_driver_ctx_impl * ictx;
+ const struct slbt_map_info * lconf;
+
+ ictx = slbt_get_driver_ictx(dctx);
+ lconf = &ictx->lconf;
+
+ if (lconf->addr)
+ return slbt_output_config_lconf(
+ dctx,lconf);
+
+ return 0;
+}