replace.C

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#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>


#include "bcdisplayinfo.h"
#include "defaults.h"
#include "guicast.h"


class MWindow : public BC_Window
{
public:
        MWindow(int x, int y)
         : BC_Window("Replace", x, y, 320, 200, 0, 0)
        {
        }

        int create_objects(char *input, char *output)
        {
                int x = 10, y = 10;

                add_subwindow(title = new BC_Title(x, y, "String to replace:"));
                y += title->get_h() + 10;
                add_subwindow(input_text = new BC_TextBox(x, y, 200, 1, input, 1));
                y += input_text->get_h() + 10;
                add_subwindow(title = new BC_Title(x, y, "Replacement string:"));
                y += title->get_h() + 10;
                add_subwindow(output_text = new BC_TextBox(x, y, 200, 1, output, 1));
                y += output_text->get_h() + 10;
                add_subwindow(new BC_OKButton(this));
                x = get_w() - 100;
                add_subwindow(new BC_CancelButton(this));
        }

        BC_Title *title;
        BC_TextBox *input_text, *output_text;
};


int main(int argc, char *argv[])
{
        char input[1024], output[1024];
        int result;
        Defaults defaults("~/.replacerc");

        input[0] = 0;
        output[0] = 0;
        defaults.load();
        defaults.get("INPUT", input);
        defaults.get("OUTPUT", output);
        BC_DisplayInfo info;
        
        
        MWindow window(info.get_abs_cursor_x(), info.get_abs_cursor_y());
        window.create_objects(input, output);
        result = window.run_window();

        if(result == 0)
        {
                strcpy(input, window.input_text->get_text());
                strcpy(output, window.output_text->get_text());
                while(--argc > 0)
                {
                        FILE *file;
                        char *buffer, *ptr1, *ptr2;
                        long len;

                        if(!(file = fopen(argv[argc], "r")))
                        {
                                printf("open %s for reading: %s", argv[argc], strerror(errno));
                                continue;
                        }

                        fseek(file, 0, SEEK_END);
                        len = ftell(file);
                        fseek(file, 0, SEEK_SET);

                        buffer = (char*)malloc(len);
                        fread(buffer, 1, len, file);
                        fclose(file);

                        if(!(file = fopen(argv[argc], "w")))
                        {
                                printf("open %s for writing: %s", argv[argc], strerror(errno));
                                continue;
                        }

                        ptr1 = buffer;
                        do
                        {
                                ptr2 = strstr(ptr1, input);

                                if(ptr2)
                                {
                                        while(ptr1 < ptr2)
                                                fputc(*ptr1++, file);

                                        ptr1 += strlen(input);
                                        fprintf(file, "%s", output);
                                }
                                else
                                        while(ptr1 < buffer + len)
                                                fputc(*ptr1++, file);
                        }while(ptr2);
                }
                printf("Replaced ""%s"" with ""%s"".\n", input, output);
        }
        else
                printf("Cancelled.\n");

        defaults.update("INPUT", input);
        defaults.update("OUTPUT", output);
        defaults.save();

}

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