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comboHandlers.h File Reference

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Detailed Description

various handlers based on comboBox data

Note:

This stuff will be moved to more appropriate files in the near future.

Definition in file comboHandlers.h.

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

command line lengths
Figure out the maximum command line lengths for the current shell
#define	RF_LINE_MAX_LEN   1026
	use a standard line length
Functions
void	freeList (GList *list)
	free a GList object and all it's members
GList *	readHistory (GList *list, char *filename)
	read a history file
int	writeHistory (char *command, char *filename)
	write to a history file (append)

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Define Documentation

#define RF_LINE_MAX_LEN   1026

use a standard line length Definition at line 46 of file comboHandlers.h. Referenced by readHistory().

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Function Documentation

void freeList (  GList *  list  )

free a GList object and all it's members Author: Karl N. Redman Parameters: list  A pointer to a GList to be freed Purpose: Frees the points in the GList and then the GList pointer itself. Definition at line 176 of file comboHandlers.c. Referenced by main(), and on_mainWindow_destroy(). { int i =0; for(; i < (int)g_list_length(list); i++, list = list->next) g_free(list->data); g_list_free(list); }

GList* readHistory (  GList *  list, char *  filename )

read a history file Author: Karl N. Redman Parameters: list  A list to populate (must be NULL) -probably superfluious. filename  The filename of the file to read from Returns: A populated GList. Purpose: Read a history file and populate a GList with it's data. The list is populated in reverse of the file contents to accomidate for (only) a file that is appended to. Warning: This caused alot of headeache. In the first place, gtk GList operations are not intuitive at all. In the end it was discovered that, because the values of the glist are pointers, that we must use a persistant glist to populate our target glist. What this means is that we end up passing in and returning the same pointer (not the same address) in order to properly populate our GList. Todo: we are not handling file operations properly here -I was probably tired and lazy at the time. This MUST be fixed in the near future! Definition at line 57 of file comboHandlers.c. References dprint, history_len, and RF_LINE_MAX_LEN. Referenced by combo_init(). { FILE *fp; /** \warning This caused alot of headeache. In the first place, gtk GList operations are not intuitive at all. In the end it was discovered that, because the values of the glist are pointers, that we must use a persistant glist to populate our target glist. What this means is that we end up passing in and returning the same pointer (not the same address) in order to properly populate our GList. */ //grab the environment $HOME directory //TODO if( (fp = fopen(filename, "a+") ) == NULL) { dprint("run-free: bash_history file not found"); /**\todo we are not handling file operations properly here -I was probably tired and lazy at the time. This MUST be fixed in the near future! */ //ok, try a different file //TODO //else pop up a dialog g_print("could not open history file\n"); } //max line length is the system max (this could be huge!) char line[RF_LINE_MAX_LEN+1]; int c; int i =0, numItems =0; //char *string; memset(line, '\0', sizeof(line)); do { if( (c = fgetc(fp)) == EOF) { //dprint("end of file\n"); break; } if(c != '\n') { if(i >= RF_LINE_MAX_LEN) dprint("HISTORY LINE LEN TOO LONG!\n"); line[i] = c; i++; continue; } else { i=0; if(strcmp(line, "\n") == 0) { memset(line, '\0', sizeof(line)); continue; } } list = g_list_prepend(list, strdup(line)); numItems++; memset(line, '\0', sizeof(line)); }while(1); fclose(fp); //list = g_list_reverse(list); //eliminate duplicates GList *newList = NULL; i=0; //this is how we set the combo box length //int loop_num = RF_MAX_HISTLIST_LEN-1; int loop_num = history_len -1; //weed out duplicates and only keep the first instance of a history //line for(;i < loop_num && (list != NULL); i++, list = g_list_next(list)) { //see if we've seen this one before if(g_list_find_custom(newList, list->data, (GCompareFunc)strcmp) == NULL) { //put the old command in the combo box newList = g_list_append(newList, (char *)list->data); } else { //increase the number of loops we're going to try and // grab the next one (unless NULL happens on next) ++loop_num; } }//end for newList = g_list_prepend(newList, ""); return(newList); }

int writeHistory (  char *  command, char *  filename )

write to a history file (append) Author: Karl N. Redman Parameters: command  the command to append to the file filename  the file to append the command to Purpose: Appends the command to the end of the file Todo: FIX THIS I'm not handling file operations properly -probably tired at the time... -parasyte. Definition at line 198 of file comboHandlers.c. References command. Referenced by on_combo_entry1_key_press_event(), on_runButton_clicked(), and run_command(). { //always writes to the end of the file FILE *fp; int retval = 0; int wLen = 0; fp = fopen(filename, "a+"); if(fp == NULL) { /**\todo FIX THIS I'm not handling file operations properly -probably tired at the time... -parasyte. */ //display dialog } //write command line to file if((wLen = fputs(command, fp)) > 0) { retval = -1; } //else write a new line fputs("\n", fp); fclose(fp); // close file return retval; }

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