ossp-pkg/var/padding.c
#include <sys/types.h>
#include <regex.h>
#include "internal.h"
int padding(tokenbuf* data, tokenbuf* widthstr, tokenbuf* fill, char position)
{
tokenbuf result;
size_t width = tokenbuf2int(widthstr);
int i;
printf("Padding data '%s' to width '%d' by filling in '%s' to position '%c'.\n",
data->begin, width, fill->begin, position);
if (fill->begin == fill->end)
return VAR_EMPTY_PADDING_FILL_STRING;
init_tokenbuf(&result);
if (position == 'l')
{
i = width - (data->end - data->begin);
if (i > 0)
{
printf("Missing %d characters at the end of the data string.\n", i);
i = i / (fill->end - fill->begin);
printf("That's %d times the padding string.\n", i);
while(i > 0)
{
if (!append_to_tokenbuf(data, fill->begin, fill->end - fill->begin))
return VAR_OUT_OF_MEMORY;
--i;
}
i = (width - (data->end - data->begin)) % (fill->end - fill->begin);
printf("Plus a remainder of %d characters.\n", i);
if (!append_to_tokenbuf(data, fill->begin, i))
return VAR_OUT_OF_MEMORY;
}
}
else if (position == 'r')
{
i = width - (data->end - data->begin);
if (i > 0)
{
printf("Missing %d characters at the beginning of the data string.\n", i);
i = i / (fill->end - fill->begin);
printf("That's %d times the padding string.\n", i);
while(i > 0)
{
if (!append_to_tokenbuf(&result, fill->begin, fill->end - fill->begin))
{
free_tokenbuf(&result);
return VAR_OUT_OF_MEMORY;
}
--i;
}
i = (width - (data->end - data->begin)) % (fill->end - fill->begin);
printf("Plus a remainder of %d characters.\n", i);
if (!append_to_tokenbuf(&result, fill->begin, i))
{
free_tokenbuf(&result);
return VAR_OUT_OF_MEMORY;
}
if (!append_to_tokenbuf(&result, data->begin, data->end - data->begin))
{
free_tokenbuf(&result);
return VAR_OUT_OF_MEMORY;
}
free_tokenbuf(data);
move_tokenbuf(&result, data);
}
}
else if (position == 'c')
{
i = (width - (data->end - data->begin)) / 2;
if (i > 0)
{
/* Create the prefix. */
printf("Missing %d characters at the beginning of the data string.\n", i);
i = i / (fill->end - fill->begin);
printf("That's %d times the padding string.\n", i);
while(i > 0)
{
if (!append_to_tokenbuf(&result, fill->begin, fill->end - fill->begin))
{
free_tokenbuf(&result);
return VAR_OUT_OF_MEMORY;
}
--i;
}
i = ((width - (data->end - data->begin)) / 2) % (fill->end - fill->begin);
printf("Plus a remainder of %d characters.\n", i);
if (!append_to_tokenbuf(&result, fill->begin, i))
{
free_tokenbuf(&result);
return VAR_OUT_OF_MEMORY;
}
/* Append the actual data string. */
if (!append_to_tokenbuf(&result, data->begin, data->end - data->begin))
{
free_tokenbuf(&result);
return VAR_OUT_OF_MEMORY;
}
/* Append the suffix. */
i = width - (result.end - result.begin);
printf("Missing %d characters at the end of the data string.\n", i);
i = i / (fill->end - fill->begin);
printf("That's %d times the padding string.\n", i);
while(i > 0)
{
if (!append_to_tokenbuf(&result, fill->begin, fill->end - fill->begin))
{
free_tokenbuf(&result);
return VAR_OUT_OF_MEMORY;
}
--i;
}
i = width - (result.end - result.begin);
printf("Plus a remainder of %d characters.\n", i);
if (!append_to_tokenbuf(&result, fill->begin, i))
{
free_tokenbuf(&result);
return VAR_OUT_OF_MEMORY;
}
/* Move string from temporary buffer to data buffer. */
free_tokenbuf(data);
move_tokenbuf(&result, data);
}
}
return VAR_OK;
}
