FreeCalypso > hg > fc-usbser-tools
view libuwrap/find_desc_str.c @ 20:43b8e88dae02
fteeprom-prog: convert to new local libs
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 08 Sep 2023 22:40:14 +0000 |
parents | fe4231326fb2 |
children |
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/* * In this module we implement the function that locates a USB device * by libftdi-style description-string. */ #include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <usb.h> #include "find_dev.h" struct usb_device * find_usbdev_by_desc_string(const char *desc_string) { struct usbdev_matchspec match; const char *cp; char *endp; if (!desc_string[0] || desc_string[1] != ':') { inv_syntax: fprintf(stderr, "error: USB device selector string has invalid syntax\n"); exit(1); } switch (desc_string[0]) { case 'd': return find_usbdev_by_busdev(desc_string + 2); case 'i': case 's': break; default: goto inv_syntax; } bzero(&match, sizeof match); cp = desc_string + 2; if (!isdigit(*cp)) goto inv_syntax; match.usb_vid = strtoul(cp, &endp, 0); cp = endp; if (*cp++ != ':') goto inv_syntax; if (!isdigit(*cp)) goto inv_syntax; match.usb_pid = strtoul(cp, &endp, 0); cp = endp; if (!*cp) { if (desc_string[0] != 'i') goto inv_syntax; return find_usbdev_by_matchspec(&match); } if (*cp++ != ':') goto inv_syntax; switch (desc_string[0]) { case 'i': if (!isdigit(*cp)) goto inv_syntax; match.index = strtoul(cp, &endp, 0); if (*endp) goto inv_syntax; break; case 's': match.serial = cp; } return find_usbdev_by_matchspec(&match); }