gcode_file.h File Reference

#include "ff.h"
#include <stdbool.h>
#include <stdio.h>

Go to the source code of this file.

Functions
int	f_gcode_thumb_open (FILE *fp, FIL *real_file)
int	f_gcode_thumb_close (FILE *fp)
bool	f_gcode_get_next_comment_assignment (FIL *fp, char *name_buffer, int name_buffer_len, char *value_buffer, int value_buffer_len)

Function Documentation

f_gcode_thumb_open()

int f_gcode_thumb_open	(	FILE *	fp,
		FIL *	real_file
	)

                                                           {
    if (gcode_thumb_fp) {
        DBG("a gcode png file is already open");
        return 1;
    }
    gcode_thumb_fp = gcode_fp;
 
    GCodeThumbDecoder::Instance().Reset();
 
    memset(fp, 0, sizeof(FILE));
    fp->_read = read;
    fp->_write = write;
    fp->_close = close;
    fp->_seek = seek;
    fp->_file = -1;
    fp->_flags = __SRD;
    fp->_lbfsize = 512;
    fp->_bf._base = (uint8_t *)malloc(fp->_lbfsize);
    fp->_bf._size = fp->_lbfsize;
 
    return 0;
}

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f_gcode_thumb_close()

int f_gcode_thumb_close

(

FILE *

fp

)

                                             {
    if (fp && fp->_bf._base) {
        free(fp->_bf._base);
    }
    gcode_thumb_fp = nullptr;
    return 0;
}

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f_gcode_get_next_comment_assignment()

bool f_gcode_get_next_comment_assignment	(	FIL *	fp,
		char *	name_buffer,
		int	name_buffer_len,
		char *	value_buffer,
		int	value_buffer_len
	)

Parse comment line in given file

Reads from the file current line and parses it. Example: Read line: ; infill extrusion width = 0.40mm\n Ouptut: name = "infill extrusion width", value = "0.40mm"

                          {
    SLine line;
    while (true) {
        if (!read_line(fp, line))
            return false;
 
        // is it a comment line?
        if (strncmp(line, ";", 1) != 0)
            continue;
 
        // find equal sign or discard this line
        int equal_sign_pos = -1;
        for (int i = 1; i < (int)strlen(line); i++) {
            if (line[i] == '=') {
                equal_sign_pos = i;
                break;
            }
        }
        if (equal_sign_pos == -1)
            continue;
 
        // trim leading spaces
        int name_start = 1;
        while (name_start < equal_sign_pos && line[name_start] == ' ')
            name_start++;
        int value_start = equal_sign_pos + 1;
        while (line[value_start] == ' ')
            value_start++;
 
        // copy name and value to given buffers
        snprintf(name_buffer, name_buffer_len, "%.*s",
            equal_sign_pos - name_start,
            (const char *)line.l + name_start);
        snprintf(value_buffer, value_buffer_len, "%s",
            (const char *)line.l + value_start);
 
        // trim trailing spaces
        str_trim(name_buffer);
        str_trim(value_buffer);
 
        return true;
    }
}

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