/* Inserts a line before nodeNum */
void line_insertBefore( MESSAGE *msg, int nodeNum, char *str ) {
LINE *oldLine, *newLine;
oldLine = NULL;
if ( ( oldLine = line_getLineNode( msg, nodeNum ) ) == NULL ) {
fprintf( stderr, "Unable to retrieve nodeNum %d\n", nodeNum );
return;
} else {
newLine = line_getLine();
/* Add the new line */
int strLen = strlen( str );
newLine->text = malloc( strLen );
memmove( newLine->text, str, strLen );
newLine->text[strLen] = '\0';
/* Update pointers */
newLine->prev = oldLine->prev;
newLine->next = oldLine;
/* if oldLine->prev we are inserting at the beginning */
if ( !oldLine->prev ) {
msg->first = newLine;
} else {
/* Otherwise insert as normal */
oldLine->prev->next = newLine;
oldLine->prev = newLine;
}
/* Update statistics */
newLine->lSize = strLen;
msg->numChars += newLine->lSize + 1;
msg->numLines++;
}
}
/* Inserts a line after nodeNum */
void line_insertAfter( MESSAGE *msg, int nodeNum, char *str ) {
LINE *oldLine = NULL;
if ( ( oldLine = line_getLineNode( msg, nodeNum ) ) == NULL ) {
fprintf( stderr, "Unable to retrieve nodeNum %d\n", nodeNum );
return;
} else {
LINE *newLine = line_getLine();
/* Add the new line */
int strLen = strlen( str );
newLine->text = malloc( strLen );
memmove( newLine->text, str, strLen );
newLine->text[strLen] = '\0';
/* Update pointers */
newLine->next = oldLine->next;
oldLine->next = newLine;
newLine->prev = oldLine;
newLine->next->prev = newLine;
/* Update statistics */
newLine->lSize = strLen;
msg->numChars += newLine->lSize + 1;
msg->numLines++;
}
}
/* Reads from stdin until EOF growing the buffer as needed */
void nonInteractive_appendMessage( MESSAGE *msg ) {
/* Loop to the end of the message */
msg = msg->root;
for ( ; msg->next; msg = msg->next )
;
/* Allocate and move to new node */
msg->next = list_getNode( msg );
msg = msg->next;
/* Get and set path and time information */
list_setPath( msg );
list_setTime( msg );
int ch, lineLen, totChars, numLines, buffSize;
ch = lineLen = totChars = numLines = 0;
char *tmp, *buffer;
tmp = buffer = NULL;
buffSize = 1024;
buffer = malloc( buffSize * sizeof(char) );
if ( !buffer ) {
fprintf( stderr,
"Failed to allocate memory for message buffer in nonInteractive_appendMessage\n" );
exit( 1 );
}
LINE *line, *prev;
line = prev = NULL;
line = line_getLine();
while ( ( ch = getchar() ) != EOF ) {
/* If we've outgrown the buffer then allocate some more memory */
if ( lineLen >= buffSize ) {
buffSize *= 2;
tmp = realloc( buffer, buffSize * sizeof(char *) );
if ( !tmp ) {
fprintf( stderr,
"Failed to allocate %d bytes in nonInteractive_appendMessage\n",
buffSize );
exit( 1 );
} else {
buffer = tmp;
}
}
if ( ch != '\n' && ch != '\0' ) {
buffer[lineLen] = ch;
lineLen++;
} else {
numLines++;
buffer[lineLen] = 0;
/* You pass buffer + lineLen because insertLine expects the pointer to be at the end of the string */
insertLine( &line, buffer + lineLen, lineLen, numLines );
if ( numLines == 1 ) {
msg->first = line;
}
/* Set and update the prev pointer */
line->prev = prev;
prev = line;
/* Get a new line and move to it */
line->next = line_getLine();
line = line->next;
totChars += lineLen + 1;
lineLen = 0;
}
}
/* Update MESSAGE statistics for this message */
msg->last = line->prev;
msg->numChars = totChars;
msg->numLines = numLines;
msg->messageNum = msg->root->totalMessages + 1;
msg->root->totalMessages++;
free( buffer );
}