1 files changed, 108 insertions, 0 deletions
diff --git a/extract/src/text.c b/extract/src/text.c
new file mode 100644
index 00000000..f832baa2
--- /dev/null
+++ b/extract/src/text.c
@@ -0,0 +1,108 @@
+#include "text.h"
+
+#include "astring.h"
+#include "outf.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+
+
+int extract_content_insert(
+        extract_alloc_t*    alloc,
+        const char*         original,
+        const char*         single_name,
+        const char*         mid_begin_name,
+        const char*         mid_end_name,
+        extract_astring_t*  contentss,
+        int                 contentss_num,
+        char**              o_out
+        )
+/* Creates a new string by inserting sequence of strings into a template
+string.
+
+If <single_name> is in <original>, it is replaced by <contentss>.
+
+Otherwise the text between the end of <mid_begin_name> and beginning of
+<mid_end_name> is replaced by <contentss>.
+
+If <mid_begin_name> is NULL, we insert into the zero-length region before
+<mid_end_name>.
+
+If <mid_end_name> is NULL, we insert into the zero-length region after
+<mid_begin_name>.
+
+At least one of <single_name>, <mid_begin_name> and <mid_end_name> must be
+non-NULL.
+*/
+{
+    int e = -1;
+    const char* mid_begin = NULL;
+    const char* mid_end = NULL;
+    const char* single = NULL;
+    extract_astring_t   out;
+    extract_astring_init(&out);
+    
+    assert(single_name || mid_begin_name || mid_end_name);
+    
+    if (single_name) single = strstr(original, single_name);
+    
+    if (single)
+    {
+        outf("Have found single_name='%s', using in preference to mid_begin_name=%s mid_end_name=%s",
+                single_name,
+                mid_begin_name,
+                mid_end_name
+                );
+        mid_begin = single;
+        mid_end = single + strlen(single_name);
+    }
+    else
+    {
+        if (mid_begin_name) {
+            mid_begin = strstr(original, mid_begin_name);
+            if (!mid_begin) {
+                outf("error: could not find '%s' in odt content", mid_begin_name);
+                errno = ESRCH;
+                goto end;
+            }
+            mid_begin += strlen(mid_begin_name);
+        }
+        if (mid_end_name) {
+            mid_end = strstr(mid_begin ? mid_begin : original, mid_end_name);
+            if (!mid_end) {
+                outf("error: could not find '%s' in odt content", mid_end_name);
+                e = -1;
+                errno = ESRCH;
+                goto end;
+            }
+        }
+        if (!mid_begin) {
+            mid_begin = mid_end;
+        }
+        if (!mid_end) {
+            mid_end = mid_begin;
+        }
+    }
+
+    if (extract_astring_catl(alloc, &out, original, mid_begin - original)) goto end;
+    {
+        int i;
+        for (i=0; i<contentss_num; ++i) {
+            if (extract_astring_catl(alloc, &out, contentss[i].chars, contentss[i].chars_num)) goto end;
+        }
+    }
+    if (extract_astring_cat(alloc, &out, mid_end)) goto end;
+    
+    *o_out = out.chars;
+    out.chars = NULL;
+    e = 0;
+    
+    end:
+    if (e) {
+        extract_astring_free(alloc, &out);
+        *o_out = NULL;
+    }
+    return e;
+}
+